瑜伽論記 6.432

6.432

解云：毳衣中，景法師云：羊毛名毳，用毳毛織成三衣，或有唯持此毳衣，或有唯持糞掃三衣，皆名杜多。

In explaining 'woolen robe', Master Jing says: sheep's wool is called *cui*; one weaves the three robes using woolen fleece. Some maintain only this woolen robe, while others maintain only the three rag robes; both are called *dhūtas*.