釋氏要覽 1.265

1.265

謂聽制二衣也○瑜伽論問云。何開聽謂佛於毘奈耶中。開許一切能無染污。現所受用資生因緣。云何制止。謂佛於毘奈耶中。制止一切自性罪法。違無罪法故（向下聽制篇義同此也。謂律中佛有聽衣。制衣故云二衣也）。

This refers to the two robes: those permitted and those prohibited. The Yogācārabhūmi-śāstra asks: "What is permitted? It means that in the Vinaya, the Buddha permits all conditions for life-support that can be without defilement and are presently used. What is prohibited? It means that in the Vinaya, the Buddha prohibits all phenomena that are unwholesome by nature, because they violate non-offending phenomena" (the chapter on permission and prohibition below shares this meaning; this means that in the Vinaya, the Buddha has permitted robes and prohibited robes, hence they are called the 'two robes').