Sunan Abi Dawud 447
سنن أبي داود#447SahihNarrated Abdullah ibn Mas'ud: We proceeded with the Messenger of Allah (ﷺ) on the occasion of al-Hudaybiyyah. The Messenger of Allah (ﷺ) said: Who will keep watch for us? Bilal said: I (shall do). The overslept till the sun arose. The Prophet (ﷺ) awoke and said: Do as you used to do (i.e. offer prayer as usual). Then we did accordingly. He said: Anyone who oversleeps or forgets (prayer) should do similarly
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Zubair Ali ZaiIsnaad Sahih
In-book reference: 2:57