It is not permissible, and the prayer is invalidated by reading from the Mushaf; because taking from the Mushaf is an external learning, which invalidates the prayer whether the Mushaf is held or placed down, and whether the worshipper turns its pages or someone else does; as narrated by Ibn Abi Awfa, may Allah be pleased with him, who said: "A man came to the Prophet, peace be upon him, and said: O Messenger of Allah, I cannot learn the Quran, so teach me what suffices me from the Quran. He said: Say: Glory be to Allah, and praise be to Allah, and there is no deity but Allah, and Allah is the Greatest, and there is no power and no strength except with Allah." This is found in Sahih Ibn Hibban 5: 116, and Sunan Abu Dawood 1: 220, and Sunan Al-Bayhaqi Al-Kabir 2: 381. This indicates that whoever has the Quran should read what is easy for him, and if he is unable to learn and memorize enough to make his prayer valid, he should resort to dhikr as long as he is unable. None of the scholars, as far as we know, have stated that it is obligatory for him to read from the Mushaf. If reading from the Mushaf were permissible in prayer and did not invalidate it, as some claim, it would be obligatory for the one unable to memorize; because he is capable of reading in a way that he is not unable to do. The transition to dhikr is only after confirming the inability to read from the Mushaf. Thus, it is established that reading from the Mushaf is not a reading that validates the prayer. Refer to: I'laa Al-Sunan 5: 60, and Al-Wasiti 2: 184, and Hilyat Al-Ulama 2: 89. The complete issues regarding taking from the Mushaf are discussed in the Ashraf opinion in Al-Fath regarding the Mushaf, page 55, as verified by Dr. Salah Abu Al-Haj.