《资治通鉴·晋纪·晋纪二十二》
闰六月，宋混的部队抵达姑臧，前凉王张祚拘捕了张的弟弟张琚及儿子张嵩，准备要杀掉他们。
闰月，混军至姑臧，凉王祚收张瓘弟琚及子嵩，将杀之。
In the intercalary sixth month, Song Hun's troops arrived at Guzang, the King of Former Liang, Zhang Zuo, arrested Zhang's brother Zhang Ju and son Zhang Song, and prepared to kill them.