Rashi on Leviticus 13:51/רש"י על ויקרא י״ג:נ״א

1צרעת ממארת A FRETTING LEPROSY — The word ממארת has the same meaning as. (Ezekiel 28:24) “a pricking (ממאיר) brier”; point (poignant) in old French The Midrashic explanation is: Attach a curse (מארה) to it, — that you will make no use of it (and therefore it must be burnt) (Sifra, Tazria Parashat Nega'im, Chapter 14 11).