TSK · Numbers 31:19

Commaunde the children of Israel that they put out of the hoast euery leper, and euery one that hath an issue, & whosoeuer is defiled by the dead:

And he shall purifie hym selfe with this water the thirde day, & the seuenth day he shalbe cleane: But if he purifie not hym selfe the thirde day, then the seuenth day he shall not be cleane.