In the explanation of the Statement of Allah, "Move not your tongue concerning (the Quran) to make haste therewith." (75.16). He said "Allah's Apostle Sallallahu Alaihe Wasallam used to bear the revelation with great trouble and used to move his lips (quickly) with the Inspiration." Ibn 'Abbas moved his lips saying, "I am moving my lips in front of you as Allah's Apostle Sallallahu Alaihe Wasallam used to move his." Saeed moved his lips saying: "I am moving my lips, as I saw Ibn Abbas moving his." Ibn Abbas added, so Allah revealed, “Move not your tongue concerning (the Qur'an) to make haste therewith. It is for us to collect it and to give you (O Muhammad) the ability to recite it (the Qur'an) (75.16- 17)” which means that Allah will make him (the Prophet ) remember the portion of the Qur'an which was revealed at that time by heart and recite it. The Statement of Allah: And When we have recited it to you (O Muhammad through Gabriel) then you follow its (Qur'an) recital (75.18) means “listen to it and be silent.” Then it is for Us (Allah) to make it clear to you
(75.19) means, then it is (for Allah) to
make you recite it (and its meaning will be clear by itself through your tongue). Afterwards, Allah's Apostle Sallallahu Alaihe Wasallam used to listen to Gabriel whenever he came and after his departure Prophet Sallallahu Alaihe Wasallam used to recite it as Gabriel had recited it.