And the word which indicates division is the word אם (if). But when it is written נגע צרעת כי תהיה באדם (When the plague of leprosy is in a man)⁵¹³ and does not say ואם שאת (and if there is a rising) – it is clarified that it is not a division from the previous statement, and it is only an expression in and of itself.

Leviticus 13:8-9 says,וראה הכהן והנה פשתה המספחת בעור וטמאו הכהן צרעת הוא. נגע צרעת כי תהיה באדם והובא אל הכהן(And the priest shall look, and, behold, if the scab be spread in the skin, then the priest shall pronounce him unclean: it is leprosy. When the plague of leprosy is in a man, then he shall be brought to the priest), using the wordכיfor “when” instead ofאם*. This is to indicate that verse Leviticus 13:9 has nothing to do with the previous verse, Leviticus 13:8, i.e., it is an expression in and of itself, a new topic.*

footnotes: ⁵¹³ Leviticus 13:9.