Мишна́ к Келим 26:11

A flask for hatat waters whose outer part has become unclean, its inner part also becomes unclean, and it conveys uncleanness to another flask, and the other to another, even if they are a hundred. A bell and a clapper are regarded as connected. In the case of a spindle stick used for coarse material, one should not sprinkle on its stick or ring, but if he sprinkled on one, both are regarded as having been sprinkled upon. A spindle stick used for flax they are regarded as connected. If a leather cover of a crib is fastened to its knobs, both are regarded as connected. The base is not regarded as connected either in respect of uncleanness or cleanness. All drilled handles of utensils are regarded as connected. Rabbi Yohanan ben Nuri says: also those that are wedged into holes in the utensils.