《宋史·本纪·卷三十一》
十四日，命令印给三总领所现钱公据、关子，允许商人交纳钱物。
丁卯，命印给三总领所见钱公据、关子，许商人入纳。
On the fourteenth day, the three headquarters were ordered to provide official receipts and customs clearance certificates to allow merchants to pay with money or goods.