σάρκες δ' ἀπ' ὀστέων ὥστε πεύκινον δάκρυ… ἀπέρρεον

From LSJ

κεντέω τὸν πῶλον περὶ τὴν νύσσαν → of impetuous haste, goad the foal around the turning post

Source