μὴ δὶς πρὸς τὸν αὐτὸν λίθον πταίειν → do not stumble twice on the same stone
a primitive root; properly, to twine, i.e. (by implication) to unite, to remain; also to borrow (as a form of obligation) or (caus.) to lend: abide with, borrow(-er), cleave, join (self), lend(-er).
