There is a stringency with a zav that there is not with a zavah, and with a zavah that there is not with a zav: That the zav requires immersion in living water, and the zavah does not require immersion in living water. The zav is defiled by an unnatural discharge for one day, and a zavah for ten days. A zav who sees three sightings in three days is [always] defiled by them, [while] there are times that a zavah can sees three sightings and is not defiled by them. As to a zav, his days do not stand before him, which is not the case with a zavah. A zav joins to his counting of seven days with two sightings, which is not the case with a zavah. The stringency with the zavah is that the zavah defiles her bedding and her seat with a sighting of any amount, she defiles her sexual partner, and she defiles from one 24-hour period to the next 24-hour period, and she defiles inside and outside equally, and she defiles rapists, and she defiles with red discharge, none of which is the case with a zav.

There is a stringency with a zav that there is not with one with corpse-impurity, and with one with corpse-impurity that there is not with a zav: That the zav makes his bedding and his seat [impure] from below him to render a person impure and to render clothing impure, and from above him [he imparts] madaf-impurity to defile foods and liquids. His unnatural discharge and his spit and and his urine defile with impurity of high stringency, and they defile foods and liquids and vessels requiring rinsing by touch and earthenware vessels by moving, and he is liable for an offering and he requires immersion in living water, which is not the case with one with corpse-impurity. The stringency of one with corpse-impurity is that one with corpse-impurity requires sprinkling on the third and seventh days, which is not the case with a zav.

There is a stringency with a zav that there is not with a leper and with a leper that there is not with a zav: A zav requires immersion with living water, which is not the case with a leper. The stringency with a leper is that the leper defiles one who enters [his house] and requires sprinkling, which is not the case with a zav. There is a stringency with a zavah that there is not with a leper, and with a female leper that there is not with a zavah: That the zavah defiles her sexual partner, which is not the case with a female leper. The stringency with the female leper is that the female leper defiles one who enters [her house] and requires sprinkling with living water, which is not the case with a zavah.