[Q]: Is it correct to read the Qurʾān from the muṣḥaf during Tarāwīḥ?

[A]: For the one who is incapable of reading from memory, then there is nothing wrong if he reads from the muṣḥaf during the Tarāwīḥ prayer. This is because he will read the entire Qurʾān from its beginning to its end. So, if he isn’t a memorizer of the Qurʾān, then he may read from the muṣḥaf. Some of the Salaf (righteous predecessors) used to do this.

Al-ʿAllāmah Ṣāliḥ al-Fawzān

[Q]: What about reciting the Qurʾān from the muṣḥaf (during prayer) noble Shaykh?

[A]: There is no objection in that – that which is correct is that there is no objection in that. So if he needed to recite from the muṣḥaf because he hasn’t memorized the Qurʾān, then there is nothing wrong if he reads from the muṣḥaf. It has been established that ‘Aa’ishah’s (رضي الله عنها) slave, Dhakwān, used to lead her in prayer (in Ramaḍān), reading from the muṣḥaf as mentioned by Bukhārī (رحمه الله‎‎) in a mu’allaq report.

Also, the original principle is that there is nothing wrong with this, and whoever forbids this, then he should bring forth evidence. The original principle has permitted recitation from memory and recitation from the muṣḥaf. This is the original principle, and whoever says, “It is forbidden [to read] from the muṣḥaf,” then he should bring forth evidence, and the original principle is that there is no evidence. So he has forbidden the original principle, and it is the permissibility of reciting the Qurʾān from the muṣḥaf. The mother of the believers has implemented this, and she is from amongst the most knowledgeable of people (رضي الله عنه).

Al-‘Allāmah Shaykh ibn Bāz

[Q]: There is a mosque whose congregation is few (in number) and there isn’t anyone from (the congregation) who is capable of reciting from memory. So, can the one who wants to lead the congregation, read with the muṣḥaf by looking at it during the prayer – the night prayer in Ramaḍān, for example?

[A]: Yes, if the Imām hasn’t memorized anything from the Qurʾān, then this action is considered permissible for him [to do] – that he reads with the muṣḥaf and there is no prohibition upon him regarding that, because this action is [implemented] for the sake of finishing the prayer, and the action [implemented] to finish the prayer does not harm, and Allāh is the granter of success.

Al-‘Allāmah Muḥammad ibn Ṣāliḥ al-‘Uthaymīn

Source: Hashīyāt Majmu’ Fatāwá Shaykh (رحمه الله‎‎)