פירוש על קידושין 70:8

The Talmud raises a difficulty. Leviticus 21 is directed at sons of Aaron, and therefore we would assume that the prohibition against marring one’s beard applies only to the males. And from here we could use kal vehomer argument to derive that the same is true for Israelites, because priests have more commandments in general than Israelites. So then why do we need the gezerah shavah comparing the word “corner” in both contexts?