BT Er 104b(1)var. :כיון דחזא דקתרו בהו כיתנא"כינתא" אסר להו‏ : for when he saw that they were steeping clay he prohibited them
See the entire entry for *kaṯ, kettā n.m. clay

BT Er 104b(1) :כיון דחזא דקתרו בהו כיתנא אסר להו‏ : when he saw that they were retting flax in them he forbade it
See the entire entry for try vb. to soak s.t.