「养虎伤身」

养虎伤身的意思是：饲养老虎，自伤其身。比喻纵敌留患。出自明·沈采《千金记·入关》：“大王，你只宜乘早击之，若迟便有养虎伤身之害矣。” 。英语翻译是：bringing up a tiger one sustains injury himself (to be injured by one whom one has been kind to) 。