Leviticus 5:2-3

Matthew(i) 2 Eyther when a manne toucheth anye vncleane thynge: whether it be the caryon of an vncleane beast or of vncleane catell or vncleane worme and is not ware of it is also vncleane & hath offended. 3 Either when he toucheth any vncleannes of man (whatsoeuer vncleannes it be that a man is defyled wythall) & is not ware of it and afterwarde cometh to the knowelege of it, he is a trespasour.