Assalamualaikum
Many people enquire about why we have to follow the Sunnah when the Quran is supposed to consist of the complete guidance for mankind.
In this thread, inshAllah I will try and give a comprehensive answer to why a Muslim has to follow the Sunnah, in addition to the Quran.
Is it contradictory to follow the Sunnah, when we are supposed to follow the Quran? It is not, for the following reasons:
In the Quran, Allah orders us to obey and follow the prophet Muhammad [saw], therefore, obeying the sayings of the Prophet [saw] is obeying the Quran; there is no contradiction in the two.
Allah says in the Quran:
Say: Obey Allah and the Messenger, but if they turn their backs, Allah loves not the disbelievers. (3:32)
The above verse [and many others similar to it] establishes that we have to obey the Messenger saw [Sunnah] as well as obeying Allah [The Quran].
And whoever obeys the Messenger, thereby obeys Allah (4:80)
Above verse shows that obeying the Messenger [saw], is obeying Allah, as Allah has ordered in the Quran to obey the Messenger [saw].
And whoever disobeys Allah and His Messenger has gone astray into manifest error. (33:36)
The above verse shows that to not obey the Messenger [saw] [and Allah ofcourse] is to go astray...
Obeying the Messenger [saw] is so important in Islam, that there isn't a single verse where Allah has said in the Quran to obey Him [swt] and not said in the same verse to obey His Messenger [saw].
On the contrary, there are some verses where only the obedience of the Messenger has been mentioned, and there is no reference to the obedience of Allah
And establish salaah and pay zakaah and obey the Prophet so that you may be blessed. (24:56)
And if you obey him (the Prophet), you shall find the right path. (24:54)
This goes to show how absolutely imperative it is to obey the Messenger [saw]
And whatever the Messenger gives you, take it, and whatever he forbids you, leave it. And fear Allah: truly Allah is severe in punishment. [Qur'an 59:7]
The above verse is general in it's meaning, thus it does not only refer to the Quranic verses recited by the Prophet [saw], but also to whatever he says regarding the Deen of Islam, thus every such sayings of the prophet [saw] is indirectly connected to that Quranic verse, so when we follow/obey the Sunnah, we follow/obey that Quranic verse [amongst others]
here is a hadith that clarifies this point further:
Ibn Masud (Allah be pleased with him) narrated that a woman came to him and told him: "You who says: May Allah's curse be on Al-Namisat [a woman who plucks hers or others eye-brows - completely or to be a thin line] and Al-Motanamisat [a woman who asks others to do it for her] and those who tattoo." He said: "Yes." She said, "I read the Book of Allah (Al-Qur'an) from its beginning to its end, I did not find what you have said." He told her: "If you have read it, you would have found it. As for your reading what the Messanger teaches you, take it, and what he forbids you, avoid doing it." She said: "Certainly". He said: "I have heard the Messenger of Allah (salaallaahu `alayhi wa sallam) says: "May Allah's curse be on Al-Namisat." (Bukhari & Muslim)
But how can we know which hadiths are authentic and which are the fabrications of man?
This is where we have to follow and accept the classifications of the hadiths, of the experts of hadiths, that are the hadith Scholars, for us laymen cannot know for sure which hadiths are authentic and whcih are not, from our own personal reasoning, for we are not qualified in the Quranic and hadith sciences, so even if a hadith seems to be contradictory, yet we should rely on the authenticity classification given to it by the experts, for we do not have all the pre-requsite and contextual knowledge to judge the hadith ourselves.
But how can we be sure that the authenticity classifications given to the hadiths by the traditional Scholars are correct, for is it not only the Quran that is protected by Allah and not the hadiths?
This is a common misconception amongst some unorthodox Muslims. The mainstream/traditional view on wether the Sunnah [which has been preserved by the means of preserving it's written and memorised documentation; hadiths] is included in Gods promise of protection or not, is as follows:
We have undoubtedly sent down the Reminder, and We will truly preserve it. (Al-Qur'an, Surah al-Hijr, 15:9)
The above promise made by Allah is obviously fulfilled in the undisputed purity of the Qur'anic text throughout the fourteen centuries since its revelation. However, what is often forgotten by many Muslims is that the above divine promise also includes, by necessity, the Sunnah of the Prophet Muhammad (may Allah bless him and grant him peace), for it is the practical example of the implementation of the Qur'anic guidance, the Wisdom taught to the Prophet (may Allah bless him and grant him peace) along with the Scripture, and neither the Qur'an nor the Sunnah can be understood correctly without recourse to the other.
Hence, Allah preserved the Qur'an from being initially lost by the martyrdom of its memorisers ...
Similarly, Allah preserved the Sunnah by enabling the Companions and those after them (may Allah be pleased with them) to memorise, write down and pass on the statements of the Messenger (may Allah bless him and grant him peace) and the descriptions of his Way, as well as to continue the blessings of practising the Sunnah. Later, as the purity of the knowledge of the Sunnah became threatened, Allah caused the Muslim nation to produce outstanding individuals of incredible memory-skills and analytical expertise, who journeyed tirelessly to collect hundreds of thousands of narrations and distinguish the true words of precious wisdom of their Messenger (may Allah bless him and grant him peace) from those corrupted by weak memories, from forgeries by unscrupulous liars, and from the statements of the enormous number of 'ulama', the Companions and those who followed their way, who had taught in various centres of learning and helped to transmit the legacy of Muhammad (may Allah bless him and grant him peace) - all of this achieved through precise attention to the words narrated and detailed familiarity with the biographies of the thousands of reporters of Hadith. Action being the best way to preserve teachings, the renewers of Islam also revived the practice of the blessed authentic Sunnah.
An Introduction To The Science Of Hadith: Foreword
... This argument accepts that the Holy Prophet () has a prophetic authority for all times to come, and that his obedience is mandatory for all Muslims of whatever age, but in the same breath it claims that the reports of the sunnah being unreliable, we cannot carry out this obedience. Does it not logically conclude that Allah has enjoined upon us to obey the Messenger, but did not make this obedience practicable. The question is whether Allah Allmighty may give us a positive command to do something which is beyond our ability and means. The answer is certainly no. The Holy Quran tself says,
Allah does not task anybody except to his ability.
It cannot be envisaged that Allah will bind all the people with something which does not exist or cannot be ascertained. Accepting that Allah has enjoined upon us to follow the sunnah of the Holy Prophet (), it certainly implies that the sunnah is not undiscoverable. If Allah has made it obligatory to follow the sunnah, He has certainly preserved it for us, in a reliable form.
The following aspect also merits consideration. Allah Almighty has given us a promise in the Holy Quran
Indeed We have revealed the Zikr (ie. the Quran) and surely We will preserve it. (15:9)
In this verse, Allah Almighty has assured the preservation of the Holy Quran. This implies that the Quran will remain uninterpolated and that it shall always be transferred from one generation to the other in its real and original form, undistorted by any foreign element. The question now is whether this divine protection is restricted only to the words of the Holy Quran or does it extend to its real meanings as well. If the prophetic explanation is necessary to understand the Holy Quran correctly, as proved in the first chapter, then the preservation of the Quranic words alone cannot serve the purpose unless the prophetic explanations are also preserved. As quoted earlier, the Holy Book says,
We have revealed to you the Zikr (Quran) so that you may explain to the people what has been sent down for them.
The word ?Zikr? has been used here for the Holy Quran as has been used in the verse 15:9 and it has been made clear that the people can only benefit from its guidance when they are led by the explanations of the Holy Prophet ().
Again, the words ?for the people? indicate (especially in the original Arabic context), that the Holy Prophet?s () explanation is always needed by ?everyone.?
Now, if everyone, in every age is in need of the prophetic explanation, without which they cannot fully benefit from the Holy Book, how would it be useful for them to preserve the Quranic text and leave its prophetic explanation at the mercy of distorters, extending to it no type of protection whatsoever.
Therefore, once the necessity of the prophetic explanations of the Holy Quran is accepted, it will be self-contradictory to claim that these explanations are unavailable today. It will amount to negating the divine wisdom, because it is in no way a wise policy to establish the necessity of the sunnah on the one hand and to make its discovery impossible on the other. Such a policy cannot be attributed to Allah the All-Mighty, the All-Wise.
The Authority of Sunnah - Chapter 3
But how comes the hadiths endorse opression, by saying that women should cover more than just the bosoms and not mix freely with men?,
The notion that such rulings are 'oppression' are a common misunderstanding amongst some unorthodox Muslims as well, and regarding these issues, or any issues which we find hard to understand of how they are just, or how they are in harmony with the Quran, we should seek a clearly explained and comprehensive answer from the Scholars, who would then share their deep insight into the religion regarding these matters with us, and we shouldn't just reject them as it apperantly seems to be unjust to our unqualifed minds.
But I dont like all the 'fetters' which the hadith puts on us and I prefer to just stick to the idea that I am following the Quran and not the hadith that has been corrupted by man, so I can live according to the man-made doctrines of the west, whcih suits my desires, surely I can't go wrong if I consider myself to be following the QURAN?, so couldn't I just ignore all of the above and remain iether the rejector of hadiths or a huge critic of it?
Allthough such a notion helps some unorthodox Muslims to keep to their western or desired way of life, but it is frought with dangers, and some of them are mentioned below:
Hadiths are basically of four types:
1] Mutawatir [mass transmitted]
2] Sahih Ahad [rigorously authenticated, but not narrated by enough people to fall under the 'mass transmitted' label]
3] Hasan [well authenticated; whcih falls under the catogory of the lowest degree of Sahih]
4] weak
There is no sin? on anyone that rejects a hadith that has been classified 'weak'?...but weak hadiths are not neccassarily untrue, therefore, we should resepct them.
And regarding the rejection of the Sahih hadiths [Mutawatir, sahih ahad, and possibly 'hasan' hadiths are included amongst this catogary], I'd like to now bring to all your attention, the following statements by great Scholars...:
Ahl al-Sunna concur, unlike the Mu'tazila, that authentic lone-narrator [ahad] reports are obligatory to believe and put into practice. Al-Qari relates, on this point, the consensus of the Companions and the Successors. Where scholars differ is whether the same hadiths convey certainty of knowledge (al-'ilm al-yaq) or only the compelling assumption of truth (al-zann al-gh⬩b). These two categories differ insofar as obligatory practice and belief based on certainty of knowledge cannot be denied except on pains of apostasy, while the denial of obligatory practice and belief based on reports compellingly assumed to be true do not constitute apostasy but constitute sin. The scholars do concur that if one disbelieves in a sound lone-narrator report one commits a grave transgression (fisq) and is even considered misguided (d⬬), but does not leave the fold of Islam. Al-Shafi'i, al-Risala (p. 460-461): "If one disbelieves in them [lone-narrated reports], we do not say to him: 'Repent!'" This is clearly unlike disbelief in a mass-transmitted report or in a verse of the Qur'an. [note that mutawatir hadiths are regarded to "convey certainty of knowledge".
http://www.sunnah.org/msaec/articles/blackdog.htm
"...The proofs for this are mutawatir - mass-transmitted - and to reject them is the mark of misguidance and worse". [Shaykh Jibril]
http://www.livingislam.org/fiqhi/sp2-gfh_e.html#11
Shaykh Hamza Yusuf:
"...One is the neccessity of belief in multipy-transmitted hadith, which have the status of the Quran in their legal and creedal consideration...To reject a multiply [mass] transmitted hadith is akin to rejecting a verse in the Quran and hence is a type of disbelief threatening one's faith. Abu Hasan al-Kharkhi al-Hanafi said "I fear a state of disbelief for one who rejects wiping over the foot coverings"" [because this ruling is based on mutawatir hadith] [taken from book: The Creed of Imam Al-Tahawi, translated, introduced and annotated by Hamza Yusuf; it's a great book!]