Commentary for Leviticus 22:7

ואחר יאכל מן הקדשים [AND WHEN THE SUN IS DOWN HE SHALL BE CLEAN] AND MAY AFTERWARDS EAT OF HOLY THINGS — This is interpreted in Treatise Jebamoth (74b) to have reference to the heave-offering (not to holy things of every description): that he (a priest who was unclean and has bathed) is permitted to eat it as soon as the sun has set.

כי לחמו הוא, and he need not await his atonement before he may eat what is his regular diet, לחמו. Our sages in Pessachim 35 stated that as soon as the sun has set the priest (who had ritually immersed himself after having contracted ritual impurity) may eat t‘rumah. [he may not yet eat sacrificial meats which are of a higher level of holiness until the following morning as those are not considered his לחמו, regular diet. Ed.]

Terumah. Explanation: This [verse that writes] “of the holy things” and [not] “all holy things,” implying only some holy things, is speaking about the holy terumah.