《金史·列传·卷八》
习不失的儿子鹘沙虎，在建国初期立有功绩，天会年间，他任真定留守。
子鹘沙虎，国初有功，天会间，为真定留守。
Xi Bush's son, Hu Shah, made contributions in the early days of the founding of the country, and he was appointed to defend Zhen Ding during the Tian Hui period.