Numbers 19:11-13

“Anyone who touches a dead body is ritually unclean for seven days. He must purify himself with the Water-of-Cleansing on the third day; on the seventh day he will be clean. But if he doesn’t follow the procedures for the third and seventh days, he won’t be clean. Anyone who touches the dead body of anyone and doesn’t get cleansed desecrates GOD’s Dwelling and is to be excommunicated. For as long as the Water-of-Cleansing has not been sprinkled on him, he remains ritually unclean.