משנה על הוריות 1:2

If a woman was eating terumah, and they came and said to her, “Your husband is dead”, or “He divorced you.” Or, if a slave was eating terumah, and they came and said to him: “Your master is dead”, or “He sold you to an Israelite”, or “He gave you away as a gift”, or “He emancipated you.” So too, if a priest was eating terumah and it became known that he was the son of a divorced woman or a halutzah (a woman released from levirate marriage): Rabbi Eliezer says: they must repay both the value and the fifth. But Rabbi Joshua exempts them [from the added fifth]. If [a priest] was standing and sacrificing on the altar and it became known that he was the son of a divorced woman or a halutzah: Rabbi Eliezer says: all the sacrifices he had offered on the altar are disqualified. But Rabbi Joshua pronounces them valid. If it, however, it became known that he possessed a blemish, his service is disqualified.