瑜伽師地論略纂 7.107

7.107

「又處中國，不生邊地」者，依俗間釋，唯五印度名為中國，中國之人具正行故；餘皆邊地，設少具行，多不具故。佛法所傳，唯中印度名為中國，威儀禮則，順正理故，苾芻等具正行故，具正至故；餘雖少具，多乖儀則，行不純故，皆名邊地。　「達須」者，細碎下惡鄙農賤類。　「蔑戾車」者，樂垢穢也。

“Furthermore, dwelling in the Central Land and not being born in the borderlands”: explained according to worldly convention, only the five Indias are called the Central Land, because the people of the Central Land possess correct practice; all the rest are borderlands, for even if they slightly possess such practice, mostly they do not. As transmitted in the Buddha’s Dharma, only Central India is called the Central Land, because its deportment and etiquette accord with correct principle, and the bhikṣus and others possess correct practice and possess the correct attainment; although others slightly possess it, mostly they go against proper etiquette, and their practice is impure, so all are called borderlands. “Dasyu” refers to the petty, inferior, base, and low agricultural castes. “Mleccha” refers to those who delight in defilement and impurity.