Hello,I have a question, how the quran was collected and why?Actually a hadith is bothering me,It's say In the battel of Yamama many hafiz died so in the fear that quran will be lost so he gathered quran but the main problem is as we know quran was written in a defective script ie,ba,ta,cha,nun etc had no distinction between them, so even if it's collected in a book form it's very much hard to understand if there is no hafiz and someone to teach them who know quran by heart and also know to write quran.It's also quoted by a nonmuslim to me "We learn that some of Muhammad's followers already knew the whole Quran by heart in his lifetime -- yet subsequently it had to pieced together out of fragments collected from here and there. We are told that Muhammad regularly dictated his revelations to a scribe -- yet the scripture was later in danger of being lost through the death in battle of those who had it by heart. It was collected and made into a book by the first Caliph; or by the second; or by the third, Uthman. Alternatively, it had already been collected before the time of Uthman, and he merely had the text standarised and other versions destroyed. The last of these traditions has tended to prevail, but the choice is a somewhat arbitrary one "Can anyone explain this to me.