Leviticus 15:11

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.

Cross-reference

In Leviticus 15:13, the discharge person's cleansing is given, resolving the impurity that makes others unclean in 15:11.

Deuteronomy 23:11 similarly requires washing after a bodily discharge, extending the same purity principle to nightly emissions.

Numbers 8:7 Parallel

In Numbers 8:7, similar washing and cleansing rites are prescribed for Levite consecration, echoing the purification process for discharge uncleanness.