《新唐书·列传·卷一百四十》
第二年，送还长孙顺德等人请和，献鱼胶为礼，说是用来黏固两国的和好。
明年，还顺德等，且请和，贽鱼胶，绐云： 固二国之好也。 
The following year, they sent Changsun Shunde and others back to ask for peace and offered fish glue as a gift, saying that it was used to solidify the friendship between the countries.