But [for tumah transmitted by] branchy canopies, or protrusions, or a field in which a grave had been plowed over, or the land of the nations, or the coffin-cover, or the coffin, or a quarter-log of blood, or a tent, or a quarter-kav of bones, or utensils that touch a corpse, or the days of [a metzora’s] counting, or the days of his confirmed tzaraas —- for these the nazir does not shave, but is sprinkled on the third and seventh days, and he does not forfeit the preceding days, and he begins to count right away, and he has no sacrifice. In truth they said: The days of a zav or a zavah, and the days of confinement of the metzora —- these are counted for him.

R’ Eliezer said in the name of R’ Yehoshua: Any tumah from a corpse for which a nazir shaves, one is liable because of it for entering the Temple; and any tumah from a corpse for which a nazir does not shave, one is not liable for it for entering the Temple. R’ Meir said: This should not be more lenient than [tumah contracted] from a creeping thing! R’ Akiva said: I reasoned before R’ Eliezer: If [for] a bone the size of a barley-grain, which does not contaminate a person by way of a roof, the nazir shaves for touching it or carrying it —- [for] a quarter-log of blood, which contaminates a person [even] by way of a roof, is it not clear that a nazir should shave for touching it or carrying it! He said to me: What is this, Akiva. We cannot reason here by kal vachomer. When I came and related these things to R’ Yehoshua, he said to me: You have spoken well, but so have they said as an Oral Law.