Sunan al-Nasa'i — The Book of Purification

“We went out as a delegation and when we arrived with the Messenger of Allah (ﷺ) he accepted our oath of allegiance and we prayed with him. When he had finished the prayer, a man who looked like a Bedouin came to him and said: ‘O Messenger of Allah, what do you think about a man who touched his penis during the Salah?’ He said: ‘It is just a part of you,’ or ‘a piece of you.'”

“My father said: ‘The Messenger of Allah (ﷺ) said: ‘Whoever goes out to his Masjid – the Masjid of Quba’ and prays therein, that will be equivalent to ‘Umrah.'”

“A man stood up and said: ‘O Messenger of Allah (ﷺ), how are the prayers at night to be done?’ The Messenger of Allah (ﷺ) said: ‘Prayers at night are (offered) two by two, then if you fear that dawn will come, pray witr with one.'”

the Prophet said: ‘Is it other than a piece of his flesh?” Or: “part of him?”

his father said: I heard Allah’s Messenger saying: “There are no two Witr in one night.”

“I had a wife whom I loved, but my father disliked her, so he ordered me to divorce her but I refused. I mentioned that to the Prophet and he said: ‘O Abdullah bin Umar! Divorce your wife.'”

“At every part of the night the Messenger of Allah (ﷺ) prayed Witr, at the beginning and in the middle, and finally his Witr was just before dawn.”

“Prayers at night and during the day are to be offered two by two.”