《明史·列传·卷二百一十》
现在只宣谕宋素卿回国，移文咨问日本国王，让他审察有无经过勘合的金牌，再行追究治罪。 
惟宣谕素卿还国，移咨其王，令察勘合有无，行究治。 
We should simply proclaim that Song Suqing should return to his home country, send an official document to the king of Japan asking him to check whether the gold medal that had been made was authentic, and then investigate and punish him further.