《资治通鉴·唐纪·唐纪十二》
太子讨厌张玄素的上书，让守门的小奴乘张玄素上早朝的机会，暗中用大马棰袭击他，差一点将他打死。
太子恶其书，令户奴伺玄素早朝，密以大马棰击之，几毙。
The Crown Prince was angered by Zhang Xuansu's memorial. He had the young official who was guarding the gate wait until Zhang Xuansu was entering the morning court and then secretly struck him with a large horsewhip, almost beating him to death.