OK.
It seemed to me
this Islamic reference site, and wiki, is not so definitive.
To explain the Catholic position:
Our Lord affirmed that Baptism is necessary for salvation (Mark 16:16, John 3:5). Because no other explicit teaching was given, the Church cannot affirm other means of assuring entry into heaven without it, without contradicting the word of Scripture.
However, Christ died for all, that sins may be forgiven, and since all are called to the one and the same destiny (cf 1 Timothy 2:4), holds that it is within the gift of the Holy Spirit to baptise whomsoever the Spirit wills (cf John 3:8).
As for children, we trust in the mercy of God that they be saved, as we do in the funeral rites for them. Indeed, Jesus said: "Suffer the little children to come unto me" (Mark 10:14), and in this we hope and believe in the salvation of those without Baptism.
So this is one of those instance where the letter is the letter, but the spirit transcends the letter.