Mambo Ya Walawi 13:51

Siku ya saba atakichunguza, na kama upele umeenea kwenye nguo, au kifaa kilichofumwa au kusokotwa, au ngozi, kwa vyovyote vile itumikavyo, ni upele uangamizao, kifaa hicho ni najisi.

And he shall look on the plague on the seventh day: if the plague be spread in the garment, either in the warp, or in the woof, or in a skin, or in any work that is made of skin; the plague is a fretting leprosy; it is unclean.