Reading , "My ordinances (, "mishpatai") shall you do, and My statutes (, "chukotai") shall you keep," the Sifra distinguished "ordinances" (, "mishpatim") from "statutes" (, "chukim"). The term "ordinances" (, "mishpatim"), taught the Sifra, refers to rules that even had they not been written in the Torah, it would have been entirely logical to write them, like laws pertaining to theft, sexual immorality, idolatry, blasphemy and murder. The term "statutes" (, "chukim"), taught the Sifra, refers to those rules that the impulse to do evil (, "yetzer hara") and the nations of the world try to undermine, like eating pork (prohibited by and ), wearing wool-linen mixtures (, "shatnez", prohibited by and ), release from levirate marriage (, "chalitzah", mandated by ), purification of a person affected by skin disease (, "metzora", regulated in ), and the goat sent off into the wilderness (the "scapegoat," regulated in ). In regard to these, taught the Sifra, the Torah says simply that God legislated them and we have no right to raise doubts about them.