Whoso removeth stones shall be hurt therewith; and he that cleaveth wood shall be endangered thereby.
Whoso removeth stones - namely, of an ancient building, or his neighbour's landmarks, or from the quarry.
He that cleaveth wood shall be endangered - by the splinters, or by the head of the hatchet, flying back on himself. Pithy aphorisms are common in the East. The sense is: Deeds of violence endanger the violent themselves.