Sunan Ibn Majah 1711
سنن ابن ماجه#1711SahihIt was narrated that Ibn ‘Abbas said:“The Messenger of Allah (ﷺ) used to fast until we thought he would never stop fasting. And he used to not fast until we thought we would never fast. And he never fasted any complete month apart from Ramadan, from the time he came to Al- Madinah.”
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih - Bukhari And Muslim
In-book reference: 7:74