1. Islamic religious law calls for burial of the body as soon as possible.
2. The deceased is first bathed and shrouded with simple white cloth.
3. Cremation of the body is strictly forbidden in Islam.
4. The body is buried without a casket and aligned perpendicular to the Qibla. The head may be turned to face the Qibla as well.

Trump should announce that any jihadis killed in the US while committing an act of terror, there will not be any bathing of your body. Go to your Allah filthy like you lived. Then you'll cremated or buried upside down in a pig carcass when we get around to it.