He was so keen to convey it to people exactly in the way it was revealed to him...

He was so keen to convey it to people exactly in the way it was revealed to him, to the extent that he used to move his tongue repeating the words he was receiving from the wahy, so as not to miss anything of it.

Al-Bukhari and others narrated from Ibn Abbas, in his interpretation of the holy verse: "Stir not thy tongue herewith to hasten it," that he said: The Messenger of Allah used to tackle whatever was hard among revelation, moving his tongue and lips with it lest he should miss it, and for keeping it in memory, as a result of which God revealed the verse (75:16) "(O Our Apostle Muhammad!) Move not thy tongue with it (the Qur'an) in haste!

Verily, on Us is the collection of it and the recital of it!" Then He (Allah) says to him (tacitly): on Us is the collection of it in your chest, then We recite it, so when we have recited it, (revealed it upon you)," then follow thou the recital!" i.e. listen and heed to it... "Again it is on Us the explaining of it!" i.e. exposing it through your tongue... etc.

The Prophet used to urge his to memorize the Qur'an with its exact words, with keeping on reciting it day and night, during salat (prayer) and any other time.

Thus there had been numerous reciters (memorizers), some of whom used to write down whatever revealed "either with initiative from their own selves or an order issued by the Prophet." Among them too were some who memorized some portion of it, and some most of it, beside some — who were few in number — who learnt by heart all of it completely. Previous…