bite the hand that feeds one in German
bite the hand that feeds one in German
den Ast absägen, auf dem man sitzt
(idiomatic) To cause harm to a benefactor (especially one that one is dependent on, thus with the idea that this behaviour is self-damaging).
in die Hand beißen, die einen füttert
(idiomatic) To cause harm to a benefactor (especially one that one is dependent on, thus with the idea that this behaviour is self-damaging).