The Messenger of Allah (May peace be upon him) got up at night, fulfilled his need and washed his face and hand and then slept.

Abu Dawud said: that is to say, he urinated
Sunan Abi Dawud Book 43, Hadith 271
← Previous Hadith The Prophet (ﷺ) said: If a Muslim sleeps while remembering Allah, in the state of purification, is alarmed while asleep at night, and asks Allah for good in this world and in the Hereafter. He surely gives it to him. Thabit al-Bunani said: AbuZabyah came to visit us and he transmitted this tradition to us from Mu'adh ibn Jabal from the Prophet (ﷺ). Thabit said: So and so said: I tried my best to utter these (prayers) when I got up, but I could not do.

Sunan Abi Dawud Book 43, Hadith 270 Next Hadith → Some relative of Umm Salamah said: The bed of the Prophet (ﷺ) was set as a man is laid in his grave; the mosque was towards his head.

Sunan Abi Dawud Book 43, Hadith 272