Halakhah for Keritot 44:19
אלא דכולי עלמא אין גזירה שוה למחצה
Is it not definitely established that a hekkesh cannot be applied partially? - All agree that a hekkesh cannot be applied partially, but here the Rabbis maintain that the textual analogy founded upon the common term 'mitzwoth' supersedes the hekkesh.
Sefer HaChinukh
The commandment of a definite guilt-offering: To offer a sacrifice for well-known sins - that we will explain. And this sacrifice is called a definite guilt-offering. And it is a sacrifice of a ram that needs to be worth two sela (Keritot 22b). And there are some of these sins for which this sacrifice comes, that are whether he sinned inadvertently or whether volitionally; and there are some for which it only comes specifically for the inadvertent, but not for the volitional.
Ask RabbiBookmarkShareCopy