All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
The scholars differed in opinion about the permissibility of reading from the Mus-haf in prayer. The view that we adopt here at Islamweb is that it is permissible whether it is a supererogatory prayer or an obligatory one.
Kash'shaaf al’Qinaa’ reads:
He [i.e. the worshiper] may read from the Mus-haf in prayer even if he memorized what he is reading because it was narrated from ‘Aa’ishah, the wife of the Prophet that Dhakwaan, who was her slave, used to lead her in prayer while reading from the Mus-haf. [Al-Bayhaqi] Az-Zuhri said: ‘Our most righteous scholars used to read from the Mus-haf in prayer, regardless whether it is a supererogatory prayer or an obligatory one.” [End of quote]
Whoever reads from the Mus-haf in his prayer, when he bows or prostrates, he should place the Mus-haf on a shelf, or a stand and the like, that is next to the praying person to put it on – and this thing should be appropriate to the veneration and respect of the Mus-haf.
An-Nawawi said in Al-Majmoo’: “The Muslim nation unanimously agreed that the Quran must be absolutely glorified, honored, and preserved.” [End of quote]
Therefore, it is not appropriate for the worshiper to put the Mus-haf in his hand and prostrate on it; neither the praying person nor anyone else should place the Mus-haf on the ground. Abu Daawood narrated on the authority of Ibn ‘Umar who said: “A group of Jews came and invited the Messenger of Allah to Quff (a valley in Madeenah). So, he visited them in the house where they study. They said: O Abul Qaasim! One of our men has committed Zina (fornication or adultery) with a woman; so, pronounce judgment upon them. They placed a cushion for the Messenger of Allah who sat on it and said: Bring the Torah. It was then brought. He then withdrew the cushion from beneath him and placed the Torah on it saying: ‘I believed in you and in Him Who revealed you.’ He then said: ‘Bring me one who is most learned among you.’ Then a young man was brought….”
The Prophet put the Torah on a cushion as a way of honoring it, so let alone the Quran.
Allah Knows best.