זֹ֠את תּוֹרַ֨ת נֶֽגַע־צָרַ֜עַת בֶּ֥גֶד הַצֶּ֣מֶר ׀ א֣וֹ הַפִּשְׁתִּ֗ים א֤וֹ הַשְּׁתִי֙ א֣וֹ הָעֵ֔רֶב א֖וֹ כָּל־כְּלִי־ע֑וֹר לְטַהֲר֖וֹ א֥וֹ לְטַמְּאֽוֹ׃ (פ)
This is the law of the plague of leprosy in a garment of wool or linen, or in the warp, or in the woof, or in any thing of skin, to pronounce it clean, or to pronounce it unclean.
Shemirat HaLashon
And what need is there for me to elaborate on the greatness of this sin, when they have already said that he [a speaker of lashon hara] is like one who transgresses the five books of the Torah and a denier of the Deity, G-d forbid. For this is the language of the Midrash Rabbah (16:1): "R. Yehoshua b. Levi said: Five "toroth" are written in the parshah: (Vayikra 13:59): "This is the Torah of the plague-spot of leprosy"; (Ibid. 14:54): "This is the Torah for all plague-spots of leprosy"; (Ibid. 14:2): "This shall be the Torah of the leper"; (Ibid. 14:32): This is the Torah for him with a plague-spot of leprosy"; (Ibid. 14:57): "This is the Torah of leprosy" ["hametzora," (acronym for)] "hamotzi shem ra," ("one who spreads a false report") — to teach you that one who speaks lashon hara transgresses five books of Torah.