Yevamot 74B

בזרעו של אהרן ⁠— הוי אומר זו תרומה. ואימא בחזה ושוק? אינה בחוזרת.

for all the seed of Aaron, both sons and daughters? You must say it is teruma. The Talmud raises a difficulty: But say that perhaps the verse is referring to the breast and thigh of a peace-offering, which also may be eaten by all the seed of Aaron, both male and female? The Talmud answers: The breast and thigh are not permitted to males and females in equal manner, as they are not permitted to the daughter of a priest who returns to the home of her father. If the daughter of a priest marries a non-priest, it is prohibited for her to partake of teruma or sacrificial food. If she is widowed or divorced and has no living descendants by her non-priest husband, it is once again permitted for her to eat teruma, but she may not partake of the breast and thigh of the offerings.

תרומה נמי, אינה בחללה! חללה לאו זרעו דאהרן היא.

The Talmud asks: If so, the same may be said about teruma as well, as it is not permitted to a ḥalala, a woman who is disqualified from marrying a priest, even though she is the daughter of a priest. The Talmud answers: A ḥalala is not considered the seed of Aaron.

וממאי דהאי ״עד אשר יטהר״, עד דאיכא הערב שמש, אימא: עד דמייתי כפרה?

The Talmud challenges the halakha recorded in the baraita that one who lacks atonement may eat teruma. And from where do you know that this verse: “Any man from the seed of Aaron who is a metzora or a zav should not eat of the holy things until he be pure,” means that he may not eat of the holy things until sunset? Say that perhaps it means that he may not eat of them until he brings his atonement offering and is entirely pure.