《旧唐书·列传·卷一百四十一》
玄奘知识渊博口才出众，每到一地都要讲授经义，解释疑难，各地的外国人都尊敬佩服他。
玄奘既辩博出群，所在必为讲释论难，蕃人远近咸尊伏之。
In the early years of Emperor Taizong's reign of Zhenguan, he followed a merchant to the Western Regions to meet Buddhist figures.