Bulugh al-Maram #660
Funerals
The Arabic includes the chain of narration (sanad) and the collector's commentary; the English translation shows the Prophet's words only.
وَعَنْ أَسْمَاءَ بِنْتِ عُمَيْسٍ رَضِيَ اَللَّهُ عَنْهَا: { أَنَّ فَاطِمَةَ عَلَيْهَا اَلسَّلَامُ أَوْصَتْ أَنْ يُغَسِّلَهَا عَلِيٌّ رَضِيَ اَللَّهُ تَعَالَى عَنْهُ } رَوَاهُ اَلدَّارَقُطْنِيُّ 1 .1 - حسن. رواه الدارقطني (2/79/12).
Asma’ bint ’Umais (RAA) narrated that Fatimah (RAA) (the daughter of the prophet (ﷺ) made a will that ‘Ali (RAA) was to wash her when she dies.’ Related by Ad-Daraqutni.
About Bulugh al-Maram
This hadith is #660 from Bulugh al-Maram, in the Book of Funerals.