Numbers 19:10-12

New Revised Standard Version, Anglicised

¹⁰ The one who gathers the ashes of the heifer shall wash his clothes and be unclean until evening.

This shall be a perpetual statute for the Israelites and for the alien residing among them. ¹¹ Those who touch the dead body of any human being shall be unclean for seven days. ¹² They shall purify themselves with the water on the third day and on the seventh day, and so be clean; but if they do not purify themselves on the third day and on the seventh day, they will not become clean.