《资治通鉴·梁纪·梁纪十三》
赵刚从蛮人住的地方去见东魏的东荆州刺史赵郡人李愍，规劝他归附西魏。李愍听从了赵刚的规劝，赵刚因此得到机会去长安。
赵刚自蛮中往见东魏东荆州刺史赵郡李愍，劝令附魏，愍从之，刚由是得至长安。
Zhao Gang went to see the Governor of Dongzhou, Li Min of Zhaojun, from the barbarians' settlement, and persuaded him to submit to Western Wei. Li Min followed Zhao Gang's advice, giving Zhao Gang the opportunity to go to Chang'an.