《宋史·列传·卷一百五十》
阻止了派使者之事。金的贺正使来到宋，有人请求皇上暂且穿淡黄袍在御殿接受国书，周必大执意不肯，于是皇上穿素色丧服，在帷幄中接见金使。
贺正使至，或请权易淡黄袍御殿受书，必大执不可，遂为缟素服，就帷幄引见。
He prevented the plan to send envoys. The Jin dynasty's envoy greeting the new year arrived in Song, and there were requests for the emperor to wear yellow-grey robes to accept the letter of credence, but Zhou Bida insisted he would not, and so the emperor wore mourning clothes and received the envoy in a tent.