וְצִוָּה֙ הַכֹּהֵ֔ן וְכִ֨בְּס֔וּ אֵ֥ת אֲשֶׁר־בּ֖וֹ הַנָּ֑גַע וְהִסְגִּיר֥וֹ שִׁבְעַת־יָמִ֖ים שֵׁנִֽית׃
then the priest shall command that they wash the thing wherein the plague is, and he shall shut it up seven days more.
Targum Jonathan on Leviticus
let the priest direct that they wash the material which hath the plague in it, and shut it up a second seven days.