Leviticus 15:28

But if she be cleansed of her issue, then she shall number to herself seven days, and after that she shall be clean.

Cross-references

Leviticus 15:13-15 gives the same seven-day counting and cleansing process for a man with a discharge, parallel to this law for a woman.

Leviticus 12:7 describes purification after childbirth, another law about a woman's discharge—parallel to this seven-day cleansing.

1 Corinthians 6:11 says believers are washed and sanctified—a spiritual fulfillment of the ritual cleansing from impurity in Leviticus 15:28.