Muwatta Malik · Hadith 520

حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ جَعْفَرِ بْنِ مُحَمَّدٍ، عَنْ أَبِيهِ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم غُسِّلَ فِي قَمِيصٍ ‏.‏

Yahya related to me from Malik from Jafar ibn Muhammad from his father that the Messenger of Allah, may Allah bless him and grant him peace, was washed in a long shirt

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).