Concerning the saying of Allah, the Mighty and Sublime: "Move not your tongue concerning to make haste therewith. It is for Us to collect it and to give you the ability to recite it- "The Prophet (ﷺ) used to suffer a great deal of hardship when the Revelation came to him, and he used to move his lips. Allah said: Move not your tongue concerning to make haste therewith. It is for Us to collect it and to give you the ability to recite it." He said: " (This means) He will gather it in your heart, then you will recite it," And when We have recited it to you, then follow the recitation. He said: "So listen to it and remain silent. So when Jibril came to him, the Messenger of Allah (ﷺ) listened, and when he left, he would recite it as he had taught him."

That he asked Sa`id bin Jubair regarding (the statement of Allah). 'Move not your tongue concerning (the Qur'an) to make haste therewith.' He said, "Ibn `Abbas said that the Prophet (ﷺ) used to move his lips when the Divine Inspiration was being revealed to him. So the Prophet (ﷺ) was ordered not to move his tongue, which he used to do, lest some words should escape his memory. 'It is for Us to collect it' means, We will collect it in your chest;' and its recitation' means, We will make you recite it. 'But when We recite it (i.e. when it is revealed to you), follow its recital; it is for Us to explain it and make it clear,' (i.e. We will explain it through your tongue).

Regarding His (Allah's) Statement:-- 'Move not your tongue concerning (the Qur'an) to make haste therewith.' (75.16) And whenever Gabriel descended to Allah's Messenger (ﷺ) with the Divine Inspiration, Allah's Messenger (ﷺ) used to move his tongue and lips, and that used to be hard for him, and one could easily recognize that he was being inspired Divinely. So Allah revealed the Verse which occurs in the Surah starting with "I do swear by the Day of Resurrection.' (75.1) i.e. 'Move not your tongue concerning (the Qur'an) to make haste then with. It is for Us to collect it (in your mind) (O Muhammad) an give you the ability to recite it 'by heart.' (75.16-17) which means: It is for us to collect it (in your mind) and give you the ability to recite it by heart. And when We have recited it to you (O Muhammad) through Gabriel then follow you its recital. (75.18) means: 'When We reveal it (the Qur'an) to you, Listen to it.' for then: It is for Us to explain it and make it clear to you' (75.19) i.e. It is up to Us to explain it through your tongue. So, when Gabriel came to him, Allah's Messenger (ﷺ) would listen to him attentively, and as soon as Gabriel left, he would recite the Revelations, as Allah had promised him.

Sa`id bin Jubair reported from Ibn `Abbas (regarding the explanation of the Verse: 'Do not move your tongue concerning (the Qur'an) to make haste therewith) . He said, "The Prophet (ﷺ) used to undergo great difficulty in receiving the Divine Inspiration and used to move his lips.' Ibn `Abbas said (to Sa`id), "I move them (my lips) as Allah's Messenger (ﷺ) used to move his lips." And Sa`id said (to me), "I move my lips as I saw Ibn `Abbas moving his lips," and then he moved his lips. So Allah revealed:-- '(O Muhammad!) Do not move your tongue concerning (the Qur'an) to make haste therewith. It is for Us to collect it and give you (O Muhammad) the ability to recite it. (i.e., to collect it in your chest and then you recite it).' (75.16-17) But when We have recited it, to you (O Muhammad through Gabriel) then follow you its recital.' (75.18) This means, "You should listen to it and keep quiet and then it is upon Us to make you recite it." The narrator added, "So Allah's Messenger (ﷺ) used to listen whenever Gabriel came to him, and when Gabriel left, the Prophet (ﷺ) would recite the Qur'an as Gabriel had recited it to him."

(as regards) Allah's Statement: "Move not your tongue concerning (the Qur'an) to make haste therewith." (75.16) When Gabriel revealed the Divine Inspiration in Allah's Messenger (ﷺ) , he (Allah's Messenger (ﷺ)) moved his tongue and lips, and that state used to be very hard for him, and that movement indicated that revelation was taking place. So Allah revealed in Surat Al-Qiyama which begins: 'I do swear by the Day of Resurrection...' (75) the Verses:-- 'Move not your tongue concerning (the Qur'an) to make haste therewith. It is for Us to collect it (Qur'an) in your mind, and give you the ability to recite it by heart. (75.16-17) Ibn `Abbas added: It is for Us to collect it (Qur'an) (in your mind), and give you the ability to recite it by heart means, "When We reveal it, listen. Then it is for Us to explain it," means, 'It is for us to explain it through your tongue.' So whenever Gabriel came to Allah's Messenger (ﷺ) ' he would keep quiet (and listen), and when the Angel left, the Prophet (ﷺ) would recite that revelation as Allah promised him.