A: If it is not possible to wash such a body, Tayammum (dry ablution) may be a substitute. This is because of the generality of the saying of Allah (Exalted be He):
So keep your duty to Allâh and fear Him as much as you can
It is also justified by the notion that Allah (Exalted be He) ordained Tayammum to obtain Taharah (ritual purification) from both major and minor ritual impurity in case there is no water, someone can not use it, or will be harmed if they use it.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.