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.