Purity: Jabirah Ghusl and Tayammum for a Corpse
Practical Laws of Islam as per the teachings of Ayatullah Sistani
Ruling 556:
Giving jabīrah ghusl to a corpse has not been sanctioned in Islamic law (i.e. it is not mashrūʿ). Furthermore, if one does not find water or there is an obstacle to using water, he must perform one tayammum on the corpse instead of giving it ghusl; and the recommended precaution is to perform three tayammums on it.
-Ayatullah Sistani, Practical Laws of Islam, Purification (Taharah)