Commentary for Leviticus 7:6

קדש קרשים הוא IT IS MOST HOLY — In Torath Cohanim these words which appear to be a mere repetition of those in v. 1, are expounded (Sifra, Tzav, Chapter 9 10).

כל זכר, “every male (priest).” This is meant to include priests, who because of a physical blemish, are not allowed to perform service in the Temple.

קדש קדשים הוא, “is it;” (the offering) this excludes such offerings as the ram brought by the Nazarene at the end of his term of abstentions, and the mandatory thanksgiving offerings, known as תודה, whose status is not “the most holy.”

הוא, “it is most holy.” This expression is meant to include communal offerings that may not be eaten except by male members of the priesthood.

That is that He commanded us that anyone who erred in a sin and is an individual offer a sin-offering sacrifice. And that is His, may He be exalted, saying, "And if a person sins in error." And that is a fixed sin-offering - meaning that is always an animal sin-offering. And we have already explained that sins for which we are liable for a sin-offering when inadvertent, we are liable for excision when volitional - and that is on condition that they are negative commandments and that they involve an action, as it is explained at the beginning of Keritot (Keritot 2). And the regulations of this commandment are explained in Tractate Menachot and Keritot, and in Tractate Shabbat, Shevuot and Zevachim. (See Parashat Vayikra; Mishneh Torah, Offerings for Unintentional Transgressions 1.)