Tazria: Chapter 30
The plague and the spirit of defilement are opposites
Synopsis

We are told that when the plague enters a house the spirit of defilement appears and they fight each other. The priest is then told about the plague, and he comes and demolishes the house. Rabbi Yehuda says that Yisrael received wealth twice, once when they left Egypt and again when they entered the land, by breaking down the contaminated houses. Lastly, Rabbi Yosi talks about the bright white spot that is sometimes found in the flesh of a person, and Rabbi Yitzchak says there are 300 arguments that may be derived from the intensely bright spot.