《资治通鉴·梁纪·梁纪十九》
侯景派宋子仙等率兵二万人去帮助任约。因为任约驻守西阳，久久不能前进，侯景自己出兵屯驻于晋熙。
侯景遣宋子仙等将兵二万助约，以约守西阳，久不能进，自出屯晋熙。
Hou Jing sent Song Zixian and others to lead 20,000 troops to help Ren Yue. Because Ren Yue was stationed in Xixi, and could not move forward for a long time, Hou Jing sent troops to station in Jinxi.