《魏书·列传·卷十二》
等到太祖回京城，停驻在恒岭太祖亲自登上山顶，安抚慰问新归附的人，恰巧遇上玄伯扶老母登山岭，太祖嘉许他，赐给牛米。
及车驾还京师，次于恆岭。太祖亲登山顶，抚尉新民。适遇玄伯扶老母登岭，太祖嘉之，赐以牛米。
When the founding emperor returned to the capital, he stopped by Hengling. The founding emperor personally ascended to the mountain peak, pacified, and consoled the people who had newly submitted, and happened to encounter Xuan Bo supporting his elderly mother to climb the mountain. The founding emperor spoke highly of him and rewarded him with oxen and rice.