《元史·列传·卷二十六》
宗王中有杀其祖母的，朵尔直班与同僚拔实极力请朝廷依法治罪，使宰相感到为难。
宗王有杀其大母者，朵尔直班与同僚拔实力请于朝，必正其罪。时相难之。
Some of the clan leaders have killed their grandmothers, and Duoerzhiban and his colleagues Baishiji strongly request the court to punish them according to the law, which makes the prime minister embarrassed.