민수기 19:16 미슈나 참조: Mishnah Pesachim, Mishnah Eruvin, Mishnah Eduyot & Mishnah Chullin

Rabbi Hanina the vice-chief of the priests says: during all of the days of the priests they never refrained from burning [sacrificial] meat which had been defiled by an offspring of uncleanness with meat which had been defiled by a father of uncleanness, even though they add uncleanness to its uncleanness. Rabbi Akiva added and said: during [all] the days of the priests they did not refrain from lighting oil which had been rendered unclean by a tevul yom in a lamp which had been made unclean by one who had contracted corpse impurity, even though they add uncleanness to its uncleanness.

One may make the side-posts out of anything, even something that is alive. But Rabbi Yose prohibits this. It also causes defilement as the covering of a tomb, But Rabbi Meir makes pure. One may write on them gittin, But Rabbi Yose the Galilean declares it unfit.

Rabbi Hanina, chief of the priests, testified concerning four matters:Through all their days the priests never refrained from burning meat which had been defiled by an “offspring” of impurity with meat which had been made impure by a “father” of impurity, although they were [thereby] increasing its impurity by a [higher] impurity. Rabbi Akiba added: “Through all their days the priests never shrank from lighting oil which had been rendered unfit by a tevul yom in a lamp made impure by one who was made impure by a corpse, although they were [thereby] increasing its impurity by a [higher] impurity.”