Abu Mas'ud al-Ansari reported God’s Messenger as saying, “A man’s prayer does not avail him unless he keeps his back steady when bowing and prostrating himself.”
Abu Dawud, Tirmidhi, Nasa’i, Ibn Majah and Darimi transmitted it, and Tirmidhi said this is a hasan sahih tradition.
We were praying behind the Prophet, and when he raised his head at the end of the rak'a he said, “God listens to him who praises Him.” A man behind him said, ‘O our Lord, to Thee be the praise, abundant, good, blessed, sufficient.” When he ended he asked, “Who was the speaker just now ?” and when the man replied that he had spoken he said, “I saw over thirty angels racing one another to be the first to record it.”
‘Uqba b. ‘Amir said that when “Glorify the name of your mighty Lord” (Al-Qur’an; 56:74, 96; 69:52) was revealed, God’s Messenger said, “Use it when bowing;” and when “Glorify the name of your most high Lord” (Al-Qur’an; 87) was revealed, he said, “Use it when prostrating yourselves.”
Abu Sa'id al-Khudri said that when God’s Messenger raised his head after bowing he said, “O God, our Lord, to Thee be the praise in all the heavens and all the earth, and all that it pleases Thee to create afterwards, O Thou who art worthy of praise and glory, most worthy of what a servant says, and we are all Thy servants, no one can withhold what Thou givest or give what Thou withholdest, and riches cannot avail a wealthy person with Thee.”*
* This is explained as meaning that only obedience to God will avail him, or protect him from God’s punishment. Jadd (riches) has also been understood in the sense of ancestor (lit. grandfather), so the phrase may be taken to mean that one’s reward in the next world does dot depend on one’s ancestry.
