BT San 96a(12) :גרעת ליה לארמא‏ : (if ) you shaved the head of a pagan
See the entire entry for grˁ vb. to shear, to shave

BT San 96a(12) :גרעת ליה לארמא ושפר ליה‏ : (if ) you shaved the pagan’s head, and he was pleased
See the entire entry for špr vb. to be beautiful, pleasing