The graves of gentiles do not render items impure though a tent, as it is stated: "And you My sheep, the sheep of My pasture, are men [adam]" (Ezekiel 34:31), from which it is derived that you, the Jewish people, are called men [adam] but gentiles are not called men [adam]. Since the Torah introduces the law of ritual impurity of a tent with the words: "When a man [adam] dies in a tent" (Numbers 19:14), this law applies only to the corpses of Jews but not those of gentiles. [10†L4-L14]
I'm happy to help you prepare a good post, but I need a bit more context. It seems like you're referencing a specific textbook or resource ("keritot 6b page 78 jebhammoth 61"), but I'm not sure what that relates to.
The juxtaposition of these discussions in Keritot and Jebhammoth might seem disparate at first glance, with one focusing on atonement and the other on familial obligations. However, both reveal the intricacy and richness of Jewish legal and ethical discourse.
Both sections rely on precise definitions—whether it is the exact weight of a spice or the specific biological status of a person—to maintain the spiritual integrity of the Jewish people and the Temple service. Keritot 6.b - Steinsaltz Center