Keilim 12:4-5

Keilim 12:4

A bloodletter’s nail is susceptible to ritual impurity but the nail of a sundial is insusceptible; Rabbi Tzadok declares it susceptible. A weaver’s nail is susceptible. Rabbi Tzadok says that the chest used by those who sell crushed grain is susceptible to impurity but the Sages say that it is insusceptible. If its wagon was made of metal, then everyone agrees that it is susceptible.

Keilim 12:5

A nail that was modified to open or close a lock is susceptible to ritual impurity but one that is used to detect intruders is insusceptible. Rabbi Akiva says that a nail that was modified to open a jar is susceptible to ritual impurity but the Sages say that it’s insusceptible unless one tempers it in a forge. A moneychanger’s nail is insusceptible to impurity but Rabbi Tzadok declares it susceptible. There are three things that Rabbi Tzadok maintains are susceptible to ritual impurity and the Sages declare insusceptible: a moneychanger’s nail, the chest of crushed-grain sellers and the nail of a sundial. Rabbi Tzadok declares these things to be susceptible to impurity while the Sages say that they are insusceptible.