The tradition mentioned above has also been transmitted by al-Bara b. Azil from the prophet (ﷺ) 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.
Reference: Sunan Abi Dawud 5048 In-book : Book 43, Hadith 276 English translation : Book 42, Hadith 5030
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