《新唐书·列传·卷五十》
张说平时与苏瑰很要好，那时苏瑰的儿子苏耮任宰相。张说写了篇《五君咏》献给苏耮。文中五君之一就是苏瑰。在瑰逝世忌日送过去。
雅与苏瑰善，时瑰子颋为宰相，因作《五君咏》献颋，其一纪瑰也，候瑰忌日致之。
Zhang said that he usually had a good relationship with Su Gui, and at that time Su Gui's son Su Zan was the prime minister. Zhang said that he wrote an article "Five Kings" to Su Zan. Su Gui was one of the Five Kings in the article, which was sent to him on the day of Gui's death anniversary.