바이크라 (레위기) 15:32

זאת תורת הזב THIS IS THE LAW OF HIM THAT HATH AN ISSUE, i.e. anyone who has but one appearance of flux. And what is his law? ואשר תצא ממנו שכבת זרע, he is like him to whom a pollution happened: he is unclean with an uncleanness lasting only till the evening (Sifra, Metzora Parashat Zavim, Chapter 9 8; cf. v. 16).

זֹ֥את תּוֹרַ֖ת הַזָּ֑ב וַאֲשֶׁ֨ר תֵּצֵ֥א מִמֶּ֛נּוּ שִׁכְבַת־זֶ֖רַע לְטׇמְאָה־בָֽהּ׃

This is the Tora of him that has an issue, and of him whose semen goes from him, and he is defiled with it;