Aman bin Saad says that a man asked Sayyiduna Ali (may Allah be pleased with him): "Can I recite (Qur'an) in bowing and prostration?" He replied: The Messenger of Allah (peace and blessings be upon him) said: I have been forbidden from reciting (Qur'an) in bowing and prostration. When you bow, then glorify the greatness of Allah, and when you prostrate, then strive to supplicate, for it is more likely that it will be accepted for you.

It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: Beware! Indeed, I have been forbidden from reciting (Qur'an) during bowing and prostration, therefore, in bowing, glorify your Lord, the Exalted, and in prostration, strive in supplication, for it is most likely that it will be accepted for you.

It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: Allah Almighty does not look towards the prayer of the person who does not straighten his back in bowing (ruku) and prostration (sajdah).

Taliq bin Ali Hanafi (may Allah be pleased with him) has also narrated a similar type of hadith from the Noble Prophet (peace and blessings be upon him and his family).

It is narrated from Sayyiduna Ali bin Shiban (may Allah be pleased with him), he says: I came to the Messenger of Allah (peace and blessings be upon him) as part of a delegation. We performed prayer behind the Noble Prophet. The Prophet glanced from the corner of his eye at a man who was not straightening his back in bowing (ruku) and prostration (sujud). When the Prophet (peace and blessings be upon him) finished the prayer, he said: O assembly of Muslims! Indeed, that man has no prayer, who does not straighten his back in bowing and prostration.

It is narrated from Sayyiduna Abu Qatadah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: The worst person in terms of theft is the one who steals from his prayer. The people asked: O Messenger of Allah! How does he steal from his prayer? He (peace and blessings be upon him) said: He does not complete the bowing and prostration, or he said: He does not straighten his back in bowing and prostration.

Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) also narrates a similar hadith from the Noble Prophet (peace and blessings be upon him).

Sayyiduna Anas bin Malik (may Allah be pleased with him) says: When the Messenger of Allah (peace and blessings be upon him) would raise his head from prostration or bowing, he would remain for such a long time that we would say: Has the Messenger of Allah (peace and blessings be upon him) forgotten?

It is narrated from Sayyiduna Ali (may Allah be pleased with him) that when the Messenger of Allah (peace and blessings be upon him) would raise his head from bowing (ruku‘), he would recite: "Sami‘a Allahu liman hamidah, Rabbana wa laka al-hamd mil’a as-samawati wal-ard wa ma baynahuma wa mil’a ma shi’ta min shay’in ba‘d." (Allah has heard the one who praised Him. Our Lord! And to You belongs all praise, as much as would fill the heavens, the earth, and what is between them, and as much as would fill whatever else You will after that.)

It is narrated from Sayyiduna Abdullah bin Abbas, may Allah be pleased with him, the narrator says that I think he narrated it as marfu‘ (attributed to the Prophet), that when the Prophet (peace and blessings be upon him) would raise his head from ruku‘, he would say:“Sami‘a Allahu liman hamidah, Allahumma Rabbana lakal hamd mil’as-samā’i wa mil’al-ard wa mil’a ma shi’ta min shay’in ba‘d.”(Allah has heard the one who praised Him. O Allah! O our Lord! To You alone belongs all praise, as much as fills the heavens, as much as fills the earth, and as much as fills whatever else You will after that.)