《金史·列传·卷三十八》
贾益说，授职都由主管官员共同商定，奏上报告，不见伯通私自任用官吏的形迹。 
贾益言除授皆宰执公议，奏禀，不见伯通私任形迹。 
Jia Yi said: All appointments were made jointly by the relevant officials and reported to the throne. There was no sign that Botong had privately appointed officials.