BT AZ 17b(35) :אימא לן, הי דשתיא והי דערבא‏ : tell us which is the warp and which is the woof
See the entire entry for ˁrb n.m. woof

BT AZ 17b(35) :הי דשתיא והי דערבא‏ : which is of the warp? Which is of the woof?
See the entire entry for šṯē, šeṯyā n.m. warp