al-Aswad bin Yazid الأسود بن يزيد بن قيس النخعي · Chapters Regarding Funerals

“When they started to wash the Prophet (ﷺ), a voice called out from inside (the house) saying: ‘Do not remove the shirt of the Messenger of Allah.’”

“Make a niche-grave for me, and block it up with bricks as was done for the Messenger of Allah (ﷺ).”