Hadith.417 - Imam Jafar ibn Muhammad Al-Sadiq عليه السلام said:
"Whoever shrouds a believer, it is as if they have guaranteed their clothing until the Day of Resurrection. And whoever digs a grave for a believer, it is as if they have prepared for them a suitable dwelling until the Day of Resurrection."
Regarding a person who dies in a state of major ritual impurity (janabah), one washing suffices for both removing the state of impurity and the washing of the deceased, as these two obligations converge into a single sanctity.