《元史·本纪·卷一》
孛端叉儿相貌很奇特，性情沉默寡言，家里人都说他痴。唯独阿阑对别人说 ：这孩子并不痴，他的后代子孙一定会出现大贵人。 
孛端义儿状貌奇异，沉默寡言，家人谓之痴，独阿兰语人曰： 此儿非痴，后世子孙必有大贵者。 
Boduancha looked very strange, and he was quiet and taciturn, and everyone in the family said he was stupid. Only Alan said to others: This child is not stupid, and there will definitely be great nobles among his descendants.