The Prophet encourages Memorisation

There are numerous ahadith, giving account of various efforts made and measures taken by the Prophet to ensure that the revelation was preserved in the memory of his Com- panions. The following is perhaps the most clear:

'Narrated 'Uthman bin 'Affan: The Prophet said: "The most superior among you (Muslims) are those who learn the Qur'an and teach it".' [Bukhari, VI, No. 546.]

It is also well known that the recital of the Qur'an during the daily prayers is required and hence many Companions heard repeatedly passages from the revelation, memorised them and used them in prayer.

The Prophet also listened to the recitation of the Qur'an by the Companions.

Narrated 'Abdullah (b. Mas'ud): 'Allah's Apostle said to me: "Recite (of the Qur'an) for me". I said: "Shall I recite it to you although it had been revealed to you?!" He said: "I like to hear (the Qur'an) from others". So I recited Surat-an-Nisa' till I reached: "How (will it be) then when We bring from each nation a witness and We bring you (O Muhammad) as a witness against these people?" ' (4: 41).

'Then he said: "Stop!" Behold, his eyes were shedding tears then.' [Bukhari, VI, No. 106.]