《旧唐书·列传·卷十九》
君集的女婿贺男楚石当时任东宫千牛，承乾命令他数次引君集进入东宫，向他求教安稳自己地位的方法。
君集子婿贺兰楚石时为东宫千牛，承乾令数引君集入内，问以自安之术。
Jun Ji's son-in-law, He Nan Chushi, was the Qianniu of the East Palace at that time. Chengqian ordered him to introduce Jun Ji into the East Palace several times, and asked him how to secure his position.