Sunan An-Nasa'i

It was narrated that Ibn 'Abbas said:""The Messenger of Allah traveled and fasted until he reached 'Usfan, then he called for a cup and drank durink the day when the people could see him. Hen he did not fast until he reached Makkah, and he conquered Makkah during Ramadan."" Ibn 'Abbas said: ""And the Messenger of Allah fasted until he reach Makkah, and he conquered Makkah during Ramadan."" Ibn 'Abbas said: ""And the Messenger of Allah fasted and broke his fast while traveling, so whoever wishes may fast, and whoever wishes may not fast