Sunan Abi Dawud 200
سنن أبي داود#200SahihNarrated Anas: The Companions during the lifetime of the messenger of Allah (May peace be upon him) used to wait for the night prayer so much so that their heads were lowered down (by dozing). Then they offered prayer and did not perform ablution. Abu Dawud said: Shu’bah on the authority of Qatadah added: We lowered down our heads (on accounts of dozing) in the day of the Messenger of Allah (May peace be upon him). Abu Dawud said; This tradition has been transmitted through a different chain of narrators
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 ZaiSahih Muslim (376)
In-book reference: 1:200