Two are defiled through a corpse, one being defiled with seven days' defilement and one being defiled with a defilement lasting until the evening. Three are defiled through a corpse, two being defiled with seven days’ defilement and one with a defilement lasting until the evening. Four are defiled through a corpse, three being defiled with seven days’ defilement and one with a defilement lasting until the evening. What [is the case of] two? A person who touches a corpse is defiled with seven days’ defilement and a person who touches him is defiled with a defilement lasting until the evening.

What [is the case of] three? Vessels touching a corpse and [other] vessels [touching these] vessels are defiled with seven days’ defilement. The third: whether a person or vessels, is defiled with a defilement lasting until the evening.

What is the case of four? Vessels touching a corpse, a person [touching these] vessels, and [other] vessels [touching this] person, are defiled with seven days' defilement. The fourth, whether a person or vessels, is defiled with a defilement [lasting until the] evening. Rabbi Akiva said: I have a fifth, [if] a peg was fixed in a tent, the tent, the peg, a person touching the peg and vessels [touching] the person are defiled with seven days' defilement. The fifth, whether a person or vessels, is defiled with a defilement [lasting until the] evening. They said to him: the tent does not count.

Persons and garments can be defiled by a zav. A greater stringency applies to persons than to garments and a greater stringency applies to garments than to persons. For a person who touches a zav can defile garments, whereas garments that touch a zav cannot defile [other] garments. A greater stringency applies to garments, for garments which form the support of a zav can defile persons, whereas a person who forms the support of a zav cannot defile [other] persons.

A person does not defile [as a corpse] until he dies. Even he is cut up or even if he is about to die, he [still] makes levirate marriage obligatory and exempts from levirate marriage, he feeds [his mother] terumah and disqualifies [his mother] from eating terumah. Similarly in the case of cattle or wild animals, they do not defile until they die. If their heads have been cut off, even though they are moving convulsively, they are unclean, like a lizard's tail, which moves convulsively.

Whole limbs [of the body] have no [restriction as to] size: even less than an olive-sized portion of a corpse or less than an olive-sized portion of nevelah (carrion), or less than a lentil-sized portion of a sheretz can defile, [each in the manner of] their respective defilements.

There are two hundred and forty-eight limbs in a human body: Thirty in the foot, six for every toe, Ten in the ankle, Two in the shin, Five in the knee, One in the thigh, Three in the hip, Eleven ribs, Thirty in the hand, [that is] six to every finger, Two in the fore-arm, Two in the elbow, One in the upper arm and Four in the shoulder, [For a total of] one hundred and one on the one side [of the body] and one hundred and one on the other. Eighteen vertebrae in the spine, Nine in the head, Eight in the neck, Six in the key of the heart, And five around the genitals. Each one [of these] can defile by contact, carriage or overshadowing. When is this so? When they have upon them the appropriate amount of flesh, But if they do not have the appropriate amount flesh upon them, they can defile by contact and carriage but cannot defile by overshadowing.