Mambo Ya Walawi 15:11

“ ‘Yeyote atakayeguswa na mtu anayetokwa na usaha bila kunawa mikono yake kwa maji, ni lazima afue nguo zake na aoge kwa maji, naye atakuwa najisi mpaka jioni.

And whomsoever he toucheth that hath the issue, and hath not rinsed his hands in water, he shall wash his clothes, and bathe himself in water, and be unclean until the even.