Keilim 10:5-6

Keilim 10:5

Let’s say that a jar was lined with pitch and a piece of the jar broke off but the pitch lining remained in place. Similarly, if a jar for pickling with fish brine was lined so that the rim of the jar extended beyond the seal. In such cases, Rabbi Yehuda says that the jars do not protect their contents from impurity but the Sages say that they do.

Keilim 10:6

If a jar had a hole but wine lees stopped it up, they protect the jar’s contents. If a person plugged the hole with a piece of vine, it doesn’t protect the contents unless he spreads clay (or other appropriate substances) on the sides. If there were two pieces of vine, it doesn’t protect the contents unless he plasters it both on the sides and between the two pieces of vine. If a board is placed over the mouth of an oven, it protects the contents if he plasters on the sides; if there are two boards, it doesn’t protect unless he plasters both on the sides and between the two boards. If the boards were joined with pegs or with joints, then one need not plaster in between them.