Leviticus 5:2-3

²A persone that touchith ony vnclene thing, ether which is slayn of a beeste, ether is deed bi it silf, ether touchith ony other crepynge beeste, and foryetith his vnclennesse, he is gilti, and trespassith.

³And if he touchith ony thing of the vnclennesse of man, bi al the vnclennesse bi which he is wont to be defoulid, and he foryetith, and knowith afterward, he schal be suget to trespas.