《史记·三十世家·宋微子世家》
九年，穆公病重，召来大司马孔父说： 先君宣公舍弃了太子与夷而将君位传给了我，我永远都不能忘记。
穆公九年，病，召大司马孔父谓曰： 先君宣公舍太子与夷而立我，我不敢忘。
In the ninth year, when Duke Mu was seriously ill, he summoned the Grand Marshal, Kongfu, and said: “The late Duke Xuan abandoned the Crown Prince Yi and passed on the throne to me. I will never forget this.”