For the source text click/tap here: Zevachim 98
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A tevul yom (one who was tamei but has immersed himself in a mikvah; he is considered a tevul yom until nightfall) and a mechusar kippurim (one who was tamei, but has immersed himself in a mikvah, and has waited until nightfall; he is just lacking atonement until he brings his offerings the next day) do not receive a share in the sacrifices to eat in the evening (even though they will be tahor by then).
An onein (one whose close relative passed away and has not been buried yet) may touch the sacrifices but does not offer them and does not receive a share to eat in the evening.
Those who have a blemish, whether a permanent blemish or a temporary one, receive a share and eat, but do not offer. The Mishna states a general rule: Whoever is unfit to perform the service does not receive a share in the meat. And he who has no share in the meat, has no share in the hide.