BT Yom 43b(6) : לא מסקי מינה כדמסיק תעלא מבי כרבא‏ : they do not derive as much (information) as a fox derives from a plowed field (of grain, i.e., nothing)
See the entire entry for slq vb. to go up

BT Yom 43b(6) :לא מסקי מינה כדמסיק תעלא‏ : they do not bring up from it (the field) more than a fox brings up
See the entire entry for təˁal, taˁlā n.m. fox