《北史·列传·卷八十四》
拾寅奉行进献物品的职责，接受北魏正朔，又接受宋的封爵，号称河南王。
拾寅奉修贡职，受魏正朔；又受宋封爵，号河南王。
Shuyin took up the duty of presenting tribute, acknowledging the legitimacy of Norther Wei, and accepting the title of Duke of Henan from Song.