الكافي- ط الاسلامية, volume 3, page 150

1. A number of our people have narrated from Sahl ibn Ziyad from Ahmad ibn Muhammad from ibn abu Nasr from Fudayl Sukkarah who has said the following: “I once asked abu ’Abd Allah (a.s.), saying, ’I pray to Allah to keep my soul in service for your cause, how much water is needed for Ghusl (bath) of a deceased? He (the Imam) said, The Messenger of Allah said to Ali (a.s.), “When I die, bring six pails of water from Ghars well (name of a well) and give me Ghusl (bath) with it. Thereafter shroud me and apply hunut on me. When you complete hunut (applying camphor), then make me sit up, then ask me whatever you want, by Allah, of whatever you ask I will give the right answer.’””

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.

2. Ali ibn Ibrahim has narrated from his father from ibn abu ‘Um ay r from Hafs al-Bakhtariy who has said the following: “Abu ‘Abd Allah (a.s.), has said that the Messenger of Allah said to Ali (a.s.), “O Ali, when I die give me Ghusl (bath) with seven pails of water from Ghars well.’””

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.

3. Muhammad ibn Yahya has said that Muhammad ibn al-Hassan who has narrated the following: “I once wrote to abu Muhammad (a.s.), ‘How much water is needed for Ghusl (bath) of a deceased person?’ The answer came with the signature of the Imam, ‘The amount of water needed is to wash the dead body clean, by the will Allah.’ He (the narrator) has said that he wrote again to him (the Imam) asking, ‘Is it permissible to wash a deceased person where the water poured on him flows into the toilet or cesspool or if water with which one takes Wudu’ flows in the toilet?’ He (the Imam) wrote back to him with his signature, ‘It does end up in the toilet.’”

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.