养虎伤身 yǎnghǔ-shāngshēn[bringing up a tiger one sustains injury himself——to be injured by one whom one has been kind to] 饲养老虎,伤及自身。比喻纵容坏人,害了自己。
饲养老虎,自伤其身。比喻纵敌留患。
?柞听了,大叫道:‘罢了,罢了!此乃~也!’ ◎《说岳全传》第五七回
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。”