Leviticus 14:57 Halakhah

לְהוֹרֹ֕ת בְּי֥וֹם הַטָּמֵ֖א וּבְי֣וֹם הַטָּהֹ֑ר זֹ֥את תּוֹרַ֖ת הַצָּרָֽעַת׃ (ס)

to teach when it is unclean, and when it is clean; this is the law of leprosy.

Read halakhic rulings (Jewish law) on Leviticus 14:57: and classical halakhic sources.