Sunan Abi Dawud Book 2, Hadith 56
"He (Bilal) called for prayer unhurriedly."
Yazid b. Salih (instead of Yazid b. Sulaih).
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.