Mambo Ya Walawi 15:6

Yeyote atakayeketi juu ya kitu chochote alichokalia mwenye kutokwa na usaha, ni lazima afue nguo zake, na aoge kwa maji, naye atakuwa najisi mpaka jioni.

And he that sitteth on any thing whereon he sat that hath the issue shall wash his clothes, and bathe himself in water, and be unclean until the even.