《资治通鉴·唐纪·唐纪二十二》
张易之兄弟每次陪侍太后在宫内宴钦，无视作为臣下应遵循的礼仪，王及善一再上奉认为不能这样。
张易之兄弟每侍内宴，无复人臣礼；及善屡奏以为不可。
Every time the Zhang Yizhi brothers accompanied the Empress Dowager in the palace to entertain her, they disregarded the etiquette that should be followed as a minister, and Wang Jishan repeatedly offered to think that this could not be done.