Sunan al-Nasa'i — The Book of Fasting

That the Messenger of Allah used to fast continually and it ws said that he would not break his fast, and he used not to fast and it was said that he would not fast.

“I asked Ibn ‘Abbas: ‘I have a small jar in which I make Nabidh and when it has bubbled and settled down again, I drink it.’ He said: ‘For how long you have been drinking that?’ He said: ‘For twenty years'” – or he said: ‘for forty years.’ He said: ‘For a long time you have been quenching your thirst with something forbidden.'”

“The Prophet performed Tawaf upon his mount, so when he arrived at the (Black Stone) corner, he pointed to it.”

“Whoever is invited to eat when he is fasting, let him accept the invitation; and if he wants to let him eat, and if he wants let him not eat.”

“I used to sell dates in the marketplace, and I would say: ‘This was such and such an amount (when I bought it).’ I Would give the purchaser a specific amount of dates according to the way it had been measured for me, and take my profit. Then I began to have some doubts about that, so I asked the Messenger of Allah (ﷺ), and he said: ‘When you name the amount, measure it in front of the purchaser.”‘

“Allah is with the judge so long as he is not unjust, but if he rules unjustly, He entrusts him to himself.”

“Meaning that the Prophet (ﷺ) was cupped because of that for bruising.”

“The Prophet (ﷺ) did not suffer any injury or thorn- prick but he would apply henna to it.”