Sunan Abi Dawud 5048
سنن أبي داود#5048SahihThe tradition mentioned above has also been transmitted by al-Bara b. Azil from the prophet (May peace be upon him) to the same effect through a different chain of narrators. One transmitter said:when you go to your bed while you are in the state of purification. The other said: Perform ablution like the ablution for prayer. He then transmitted the tradition to the effect as Mu’tamir transmitted
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
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih
In-book reference: 43:276