Urwa ibn al-Zubayr عروة بن الزبير · The Book of Fasting

"We were forbidden in the Quran to ask the Prophet about anything not imperative, so we liked it when a wise man from among the people of the desert came and asked him. A man from among the desert people came and said: 'O Muhammad, your messenger came to us and told us that you say that Allah, the Mighty and Sublime, has sent you.' He said: 'He spoke the truth.' He said: 'Who created the heavens?' He said: 'Allah.'…

"Do not anticipate the month until you see the crescent before it, or you complete the number of days. Then fast until you see the new moon, or you complete the number of days."

"The Messenger of Allah used to fast Sha`ban and Ramadan, and he made sure to fast on Mondays and Thursday."

"We were with 'Ammar and a roast sheep was brought and he said: 'Eat.' One of the people turned away and said: 'I am fasting 'Ammar said: Whoever fasts on the day concerning which there is doubt, has disobeyed Abu Al-Qasim."' '

"Do not fast one or two days ahead of the month, unless the one who used to observe a regular fast. In that case let him fast." '

"The Messenger of Allah said: 'Fasting is a shield."' (Sahih

"O Messenger of Allah, I feel able to fast while traveling." He said: "If you wish then fast and if you wish then do not fast."

he asked the Messenger of Allah about fasting while traveling. He said: "If you wish to fast then fast, and if you wish not to fast then do not fast."

"I used to fast continually at the time of the Messenger of Allah. I said: 'O continually while traveling.' He said: 'If you wish then fast, and if you wish then do not fast."'

"I said: 'O Prophet of Allah, I am a man who fasts continually, so should I fast while traveling?' He said: 'If you wish then fast, and if you wish then do not fast."'

"If you wish then fast, and if you wish then fast, and if you wish then do not fast."

"I feel able to fast while traveling; is there any sin on me?" He said: "It is a concession from Allah, the mighty and sublime, so whoever accepts it has done well, and whoever wants to fast, there is no sin on him."

"It was said: 'O Messenger of Allah, so and so never broke his fast, even for one day for the rest of his life.' He said: 'He has neither fasted nor broken his fast."" 'Ata said: "someone who heard him told me that Ibn 'Umar (said) that the Prophet said: 'Whoever fasts every day of his life, then he has not fasted."