《左传·桓公·桓公二年》
二年春季，周历正月戊申日，宋国的华父督杀死了其国君与夷和大夫孔父嘉。
二年春，王正月戊申，宋督弑其君与夷，及其大夫孔父。
In the spring of the second year, on the wu shen day of the first month of the Zhou calendar, Duke Hua Fu of the State of Song killed his ruler Yu and大夫Kong Fu Jia.