Narrated Ibn 'Abbas: When the opening verses of Surah Al-muzammil was revealed, the Companions would pray as long as they would pray during Ramadan until its last verses were revealed. The period between the revelation of its opening and the last verses was one year.

Narrated Abu Hurairah: The Messenger of Allah (ﷺ) as saying: When one you sleeps, the devil ties three knots at the back of his neck, sealing every knot with, "You have a long night, so sleep." So if one awakes and mentions Allah, a knot will be loosened; if he performs ablution another knot will be loosened; and if he prays, the third knot will be loosened; and in the morning he will be active and in good spirits; otherwise he will be in bad spirits and sluggish.

Narrated Aisha, Ummul Mu'minin: Do not give up prayer at night, for the Messenger of Allah (ﷺ) would not leave it. Whenever he fell ill or lethargic, he would offer it sitting.

Narrated AbuHurayrah: The Prophet (ﷺ) said: May Allah have mercy on a man who gets up at night and prays, and awakens his wife; if she refuses, he should sprinkle water on her face. May Allah have mercy on a woman who gets up at night and prays, and awakens her husband; if he refuses, she would sprinkle water on his face.

Narrated AbuSa'id and AbuHurayrah: The Prophet (ﷺ) said: If a man awakens his wife at night, and then both pray or both offer two rak'ahs together, the (name of the )man will be recorded among those who mention the name of Allah, and the (name of the) woman will be recorded among those who mention the name of Allah. Ibn Kathir did not narrate this tradition as a statement of the Prophet (ﷺ), but he reported it as a statement of Abu Sa'id. Abu Dawud said: This tradition has been narrated by Ibn Mahdi from Sufyan and I think he mentioned the name of Sufyan. He also said: The tradition transmitted by Sufyan is a statement of the Companion (and not that of the Prophet).

Narrated 'Aishah, wife of Prophet (ﷺ): When one of you dozes in prayer he should sleep till his sleep is gone, for when one of you prays while he is dozing, perhaps he might curse himself if he begs pardon of Allah.

Narrated Abu Hurairah: The Messenger of Allah (ﷺ) as saying: When one of you gets up by night (to pray), and falters in reciting the Qur'an (due to sleep), and he does not understand what he utters, he should sleep.

Narrated Anas: The Messenger of Allah (ﷺ) entered the mosque (and saw that) a rope tied between two pillars. He asked: What is this rope (for) ? The people told him: This is (for) Hamnah b. Jahsh who prays (here). When she is tired, she reclines on it. The Messenger of Allah (ﷺ) said: She should pray as much as she has strength. When she is tired, she should sit down. This version of Ziyad has: He said: What is this ? The people told him: This is for Zainab who prays. When she becomes lazy, or is tired, she holds it. He said: Undo it. One of you should pray in good spirits. When he is lazy or tired, he should sit down.

Narrated 'Umar bin Al-Khattab: The Messenger of Allah (ﷺ) as saying: He who misses him daily round of recital or part of it due to sleep and he recites it between the dawn and the noon prayers, will be reckoned as if he recited it at night.

Narrated Aisha, Ummul Mu'minin: The Prophet (ﷺ) said: Any person who offers prayer at night regularly but (on a certain night) he is dominated by sleep will be given the reward of praying. His sleep will be almsgiving.

Narrated Abu Hurairah: The Messenger of Allah (ﷺ) as saying: Our Lord who is blessed and exalted descends every night to the lowest heaven when the last one-third of the night remains, and says: Who supplicated Me so that I may answer him ? Who asks of Me so that I may give to him ? Who asks My forgiveness so that I may forgive him ?

Narrated 'Aishah: Allah, the Exalted, would awaken the Messenger of Allah (ﷺ) at night. When the dawn came, he would his finish daily round of recital.

Masruq said: I asked 'Aishah about the prayer of the Messenger of Allah (ﷺ), and I said to her: At what time he prayed at night ? She said: When he heard the cock crow, he got up and prayed.

Narrated 'Aishah: When he was with me he would sleep at dawn. By this she referred to the Prophet (ﷺ).

Hudhaifah said: When anything distressed the Prophet (ﷺ), he prayed.

Narrated Rab'iah b. Ka'b al-Aslami: I used to live with the Messenger of Allah (ﷺ) at night. I would bring water for his ablution and his need. He asked: Ask me. I said: Your company in Paradise. He said: Is there anything other than that ? I said: It is only that. He said: Help me for yourself by making prostrations abundantly.

Anas b. Malik said (explaining the meaning of the Qur'anic verse "Who forsake their beds to cry unto their Lord in fear and hope, and spend of what We have bestowed on them" (32:16). The people used to remain awake between the sunset and the night prayers and would pray. Al-Hasan used to say: (This verse means) the prayer and vigil at night.

Anas said (explaining the meaning) of the following Qur'anic verse "They used to sleep but little of the night" (51:17): They (the people) used to pray between the Maghrib and 'Isha. The version of Yahya adds: The verse tatajafa junubuhum also means so.

Narrated Abu Hurairah: The Messenger of Allah (ﷺ) as saying: When one of you gets up at night, he should begin the prayer with two short rak'ahs.

This tradition has also been transmitted by Abu Hurairah through a different chain of narrators to the same effect. This version adds: He should then prolong it afterwards as much as he likes. Abu Dawud said: This tradition has been transmitted by Hammad b. Salamah, Zuhair b. Mu'awiyah and a group of narrators from Hisham. They transmitted it as a statement of Abu Hurairah himself (mauquf). This tradition has also been transmitted by Ibn 'Awn from Muhammad (b. Sirin). This version has the wordings: These two rak'ahs were short.