Sayyiduna Ali (may Allah be pleased with him) reports that the Messenger of Allah (peace and blessings be upon him) said: The key to prayer is ablution, its sanctification is saying Allahu Akbar, and its conclusion is the greeting of peace. And in another narration, the words are: The key to prayer is ablution, its sanctification is saying Allahu Akbar, and its conclusion is turning for the greeting of peace.

Sayyiduna Fadl bin Abbas (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: Prayer is in sets of two rak‘ahs; in every two rak‘ahs, recite the tashahhud, show humility, adopt submissiveness, and express poverty. Then raise your hands towards your Lord, with the inner part of your palms facing your face, and say: O my Lord! O my Lord! Whoever does not do so, he... (Then the Prophet, peace and blessings be upon him, said something severe about him.)

It is narrated from Sayyiduna Abu Hurairah, may Allah be pleased with him, that the Noble Prophet, peace and blessings be upon him, said: Do you think my qiblah is here (in front of me)? (Remember that) nothing of your humility and bowing is hidden from me.

(Second chain) The Noble Prophet, peace and blessings be upon him, said: Indeed, I see your humility.

Mutarrif narrates from his father, and he says: I came to the Messenger of Allah, peace and blessings be upon him, while he was praying, and from his chest there was a sound like the boiling of a pot.

(Second chain of narration) He says: I saw the Messenger of Allah, peace and blessings be upon him, and due to his weeping, a sound like that of a boiling pot was coming from his chest.

Sayyiduna Zayd bin Khalid al-Juhani, may Allah be pleased with him, narrates that the Messenger of Allah, peace and blessings be upon him, said: Whoever performs two rak‘ahs and is not heedless in them, Allah forgives all his past sins.