It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that when the Messenger of Allah (peace and blessings be upon him) would stand for Tahajjud at night, he would begin with two light rak‘ahs.

Sayyiduna Amr bin Abasah (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings be upon him) said: "The night prayer is in sets of two rak‘ahs, and in the last part of the night, supplication is most readily accepted." I asked: Is it obligatory to supplicate in that part? He (peace and blessings be upon him) said: "No, no, (I am saying that) supplication is most readily accepted."

Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: "The honor of a believer is in the night prayer (Tahajjud), and his dignity and self-respect is in being independent of what is in the hands of people (of the world)."

It is narrated from Sayyiduna Thawban (may Allah be pleased with him), he says: We were on a journey with the Messenger of Allah (peace and blessings be upon him), and he said: "Since this journey is a cause of hardship and difficulty, everyone should perform two units of voluntary prayer after Witr. If (he wakes up to stand in prayer), then fine, otherwise these two units will suffice for him."

It is narrated from Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) that a man greeted the Prophet Muhammad (peace and blessings be upon him) with salam while he was in prayer. The Prophet (peace and blessings be upon him) replied to his salam by gesture. When the Prophet (peace and blessings be upon him) finished the prayer, he said: "We used to reply to salam during prayer, but now we have been forbidden from doing so."

It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that he used to greet the Messenger of Allah (peace and blessings of Allah be upon him) with salam while he was praying, and the Prophet (peace and blessings of Allah be upon him) would respond to him. (One day) he greeted with salam, but the Prophet (peace and blessings of Allah be upon him) did not respond. Sayyiduna Abdullah (may Allah be pleased with him) thought that the Messenger of Allah (peace and blessings of Allah be upon him) was upset with him. When the Prophet (peace and blessings of Allah be upon him) finished the prayer, he asked: O Messenger of Allah! I used to greet you with salam during prayer and you would respond to me, but today I greeted you and you did not respond. I thought you were upset with me. The Prophet (peace and blessings of Allah be upon him) said: "It is not so. In fact, we have been forbidden from engaging in any action during prayer except for the recitation of the Qur'an and the remembrance (dhikr) of Allah."

It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) came to (the mosque of) Quba. He (peace and blessings be upon him) was offering prayer when some Ansari people came and greeted him with salam. I asked Sayyiduna Bilal (may Allah be pleased with him): When they greeted him with salam while he (peace and blessings be upon him) was in prayer, how did he (peace and blessings be upon him) reply to their salam? He said: He (peace and blessings be upon him) would do like this. Then he spread his palm. (While describing this manner) Ja'far bin 'Awn spread his palm and kept its inner side downward and the outer side upward.

Sayyiduna Jabir (may Allah be pleased with him) says: I do not wish to greet a person who is performing prayer with salam, but if someone greets me with salam, then I will certainly reply to him.

It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him), he says that the Messenger of Allah (peace and blessings of Allah be upon him) said: "When a man is praying and permission is sought from him, he should grant permission by saying «سبحان الله» , and when a woman is praying and permission is sought from her, she should grant permission by clapping."

Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) used to pray, and when he would go into prostration, Hasan and Husayn would jump and climb onto his back. When the companions intended to stop them, he (peace and blessings be upon him) would gesture to let them (remain as they were). When he completed the prayer, he would seat them in his lap and say: "Whoever loves me should love these two."