It wasnarrated from 'Ali that the Messenger of Allah (ﷺ) said:
"WhenI die, then wash me with seven buckets from me well, the well ofGhars." (JA)
English reference (JA): Vol. 1, Book 6, Hadith 1468 (JA)
Arabic reference (JA): Book 6, Hadith 1535 (JA)