וַיִּתֵּ֨ן מֹשֶׁ֜ה אֶת־כֶּ֧סֶף הַפְּדֻיִ֛ם לְאַהֲרֹ֥ן וּלְבָנָ֖יו עַל־פִּ֣י יְהוָ֑ה כַּאֲשֶׁ֛ר צִוָּ֥ה יְהוָ֖ה אֶת־מֹשֶֽׁה׃ (פ)
Y Moisés dió el dinero de los rescates á Aarón y á sus hijos, conforme al dicho de SEÑOR, según que SEÑOR había mandado á Moisés.
Siftei Chakhamim
And finds that it spread. Meaning: The phrase, “[The kohein shall come] and see; and behold! [The eruption] has spread” does not refer to [the case where it] returns and sprouts, because we derive ממארת through a gezeiroh shovoh above (3:51) that even though it does not spread it is impure. If so, in [regard to] what is the verse speaking? If regarding [a case] where [the eruption] spread during the first [week], it was already mentioned (v. 39): “The kohein shall return on the seventh day and shall see; and behold! The eruption has spread.” [It must be then that it speaks] only regarding the kohein who comes at the end of the first week and found it unchanged in his sight and it spreads in the second [week]. [In this case] we derive “coming” from “returning” through a gezeiroh shovoh, just as later [he removes the affected stones and] scrapes and plasters and gives it another week, so too here. And the verse (45), “and he shall dismantle the house” refers to (v. 43) “If the eruption returns and sprouts,” of which Scripture did not speak at all, and it explains here that it must be dismantled. However, if it remains unchanged in the first week and spreads in the second week, he removes the stones, scrapes, plasters, and gives it a week.