Leviticus 13:23

.תחתיה means IN ITS PLACE (and not “beneath it”). צרבת שחין [IT IS] A BURNING BOIL — Understand this as the Targum does: רשם שחנא — i. e. it is only a mark (a scar) of the inflammation, discernible in the flesh. Wherever צרבת occurs it denotes the contraction of skin which has become shrivelled through inflammation. Similar is, (Ezekiel 21:3) “and every face shall become shrivelled (ונצרבו)” through the heat mentioned in the verse, retrecir in old French, to contract. צרבת is retrecissement in old French, (English = contraction).

But if the bright spot stay in its place, and spread not, it is the scar of the pox; and the priest shall pronounce him clean.

וְאִם־תַּחְתֶּ֜יהָ תַּעֲמֹ֤ד הַבַּהֶ֙רֶת֙ לֹ֣א פָשָׂ֔תָה צָרֶ֥בֶת הַשְּׁחִ֖ין הִ֑וא וְטִהֲר֖וֹ הַכֹּהֵֽן׃ {ס}