If the body is in pieces, then how to wash the body and perform ghusl on it?

 How to perform ghusl on body which is crushed or burnt or drowned?

If the Muslims are able to wash their deceased, then it is obligatory for them to wash him, then shroud him, offer the funeral prayer for him, and bury him.

If they are not able to wash him because washing will cause the body to disintegrate further, they should pour water on him. If they are not able to do that either, they should do tayammum for him with dust. If they are able to wash some parts of his body or pour water over them, and not others, they should wash whatever they are able to, or pour water over it, and do tayammum for the rest of his body.

Complete Answer: https://islamqa.info/en/answers/194752/burying-the-deceased-without-washing-him-because-his-body-is-in-pieces