Encouragement to pray at night

It is narrated from Sayyiduna Abu Umamah al-Bahili (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Hold fast to standing in prayer at night (tahajjud), for it is the way of the righteous who came before you; it is a means for you of nearness to your Lord, an expiation for sins, and a restraint from sin."
This hadith is sahih (authentic) on the condition of Imam Bukhari, but they did not record it.

Sayyiduna Anas (may Allah be pleased with him) narrates that one night the Messenger of Allah (peace and blessings be upon him) felt some pain. When morning came, it was said: O Messenger of Allah, the effects of pain on you are quite evident. He (peace and blessings be upon him) said: "Indeed, I am in the state you see, but by the grace of Allah I have recited (tonight) the seven long surahs (al-Sab' al-Tiwal)."
This hadith is sahih (authentic) on the condition of Imam Muslim, but they did not record it.

Abdullah bin Abi Qays narrates that Sayyidah Aishah (may Allah be pleased with her) said to me: "Never abandon the tahajjud prayer, for the Messenger of Allah (peace and blessings be upon him) never left it, and when he (peace and blessings be upon him) was ill or felt tired, he would pray sitting."

(A narration reported in support of the previous hadith.)
This hadith is sahih (authentic) on the condition of Imam Muslim, but the two Shaykhs did not record it.

Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: "Whoever keeps to these five obligatory prayers will not be written among the heedless, and whoever recites one hundred verses in a night will be written among the devoutly obedient (qanitin) to Allah."
This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it.

It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever prays with one hundred verses in a night will not be written among the heedless, and whoever prays with two hundred verses in a night will be written among the sincere, devoutly obedient servants of Allah."
This hadith is sahih (authentic) on the condition of Imam Muslim, but they did not record it.

Sayyiduna Amr bin Abasah (may Allah be pleased with him) narrates: I came to the Messenger of Allah (peace and blessings be upon him) while he (peace and blessings be upon him) was staying at Ukaz, and I said: O Messenger of Allah! Is there any supplication that is nearer (to acceptance) than another, or is there any hour that should be observed, or in which remembrance is most fitting? He (peace and blessings be upon him) said: "Yes, the Lord is nearest to His servant in the last middle part of the night, so if you are able to be among those who remember Allah in that hour, then do so."
This hadith is sahih (authentic) on the condition of Imam Muslim, but they did not record it.

It is narrated from Abdullah bin Abi Qays that the Mothers of the Believers (may Allah be pleased with them) told him that Allah Almighty guided His Prophet (peace and blessings be upon him) to a (particular) deed. So Abdullah said to them: Tell me too, to which deed did Allah guide His Prophet (peace and blessings be upon him)? They said: Allah guided him (peace and blessings be upon him) to standing in prayer at night (tahajjud).
This hadith is sahih (authentic) on the condition of Imam Muslim, but they did not record it.

It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "May Allah have mercy on a man who gets up at night and prays, and wakes his wife as well; then if she refuses, he sprinkles water on her face. And may Allah have mercy on a woman who gets up at night and prays, and wakes her husband; then if he refuses, she sprinkles water on his face."
This hadith is sahih (authentic) on the condition of Imam Muslim, but they did not record it.

Ya'la bin Mamlak narrates that he asked Sayyidah Umm Salamah (may Allah be pleased with her) about the night prayer and the recitation of the Messenger of Allah (peace and blessings be upon him). She said: What concern is his (peace and blessings be upon him) prayer (and its manner) to you? He (peace and blessings be upon him) would pray, then sleep for as long as he had prayed, then pray for as long as he had slept, then sleep for as long as he had prayed, until morning came. And she described his (peace and blessings be upon him) recitation, and it was a recitation that pronounced each letter separately and clearly.
This hadith is sahih (authentic) on the condition of Imam Muslim, but they did not record it.

It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that when he stood (for tahajjud) at night, he would sometimes raise his voice and sometimes keep it low, and he used to say that the Messenger of Allah (peace and blessings be upon him) also did the same.
The chain of this hadith is sahih (authentic), but they did not record it.

Abdullah bin Abi Qays narrates that he asked Sayyidah Aishah (may Allah be pleased with her) how the Messenger of Allah (peace and blessings be upon him) recited at night: did he recite aloud or silently? She said: He (peace and blessings be upon him) did both; sometimes he recited aloud and sometimes silently. So I said: All praise is for Allah, who has made latitude in this matter.
This hadith is sahih (authentic) on the condition of Imam Muslim, and it is a supporting witness (shahid) for the previous hadith of Abu Hurayrah (may Allah be pleased with him).

It is narrated from Sayyiduna Abu Qatadah (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) passed by Sayyiduna Abu Bakr (may Allah be pleased with him) while he was praying in a low voice, and he (peace and blessings be upon him) passed by Sayyiduna Umar (may Allah be pleased with him) while he was praying in a loud voice. When both of them gathered with the Prophet (peace and blessings be upon him), he (peace and blessings be upon him) said to Abu Bakr: "O Abu Bakr! I passed by you while you were praying in a low voice?" He said: (O Messenger of Allah!) I have made the One I was conversing with hear me. Then he (peace and blessings be upon him) said: "O Umar! I passed by you while you were raising your voice!" He said: O Messenger of Allah! I hope for reward through it, that I may wake the drowsy one. The narrator says: So he (peace and blessings be upon him) said to Abu Bakr: "Raise your voice somewhat," and said to Umar: "Lower your voice somewhat."
This hadith is sahih (authentic) on the condition of Imam Muslim, but the two Shaykhs did not record it.

Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) observed i'tikaf in the mosque, and he (peace and blessings be upon him) heard the people reciting aloud while he (peace and blessings be upon him) was in his tent. So he (peace and blessings be upon him) drew back the curtains and said: "Indeed, each one of you is conversing intimately with his Lord, so let none of you harm another, and let none of you raise his voice over another in the recitation of the prayer."
This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it.

It is narrated from Sayyiduna Abu al-Darda (may Allah be pleased with him), who traces it back to the Prophet (peace and blessings be upon him), that he (peace and blessings be upon him) said: "Whoever comes to his bed intending to get up at night and pray, but his eyes overcome him until morning comes, what he intended will be written for him, and his sleep will be a charity to him from his Lord."
This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it; and in my view, they regarded it as defective because it is also narrated from Za'idah as mawquf (a statement of the Companion):

The previous hadith of Sayyiduna Abu al-Darda (may Allah be pleased with him) is narrated as his own statement (mawquf). And this does not weaken the hadith, because al-Husayn bin Ali al-Ju'fi is earlier, a better memoriser, and more expert in the hadith of Za'idah than the other narrators.

Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: "Do not single out the day of Friday among the days for fasting, nor single out the night of Friday among the nights for standing in prayer."
This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it!