四分律刪繁補闕行事鈔 3.25

3.25

二財體如。必須厚重熟緻者。若細薄生疎綾羅、錦綺、紗縠、細絹等，並非法物。律云：文繡衣不成受持故。《僧祇》：一切生疎毛髮、樹皮衣、草衣、皮衣，並不成。《五百問》云：生絹不得作，必不現身者得，以作成如法故。《僧祇》：龍著袈裟，免金翅鳥難；必不順教，則所被無力故。

2. The material substance being in accordance [with the Dharma]. It must be thick, sturdy, well-processed, and dense. If it is fine, thin, raw, loose, patterned damask, brocade, gauze, sheer silk, or fine pongee, these are all illicit materials. The Vinaya states: "An embroidered robe does not constitute [a robe that can be] formally taken and held." The Mahāsāṃghika-vinaya states: "All raw, loose animal hair, tree-bark garments, grass garments, and leather garments do not constitute [robes]." The Wubai wen states: "Raw silk cannot be used to make it; but if it does not reveal the body, it is permissible, provided that the making conforms to the Dharma." The Mahāsāṃghika-vinaya states: "When dragons wear the kāṣāya, they are spared the disaster of the garuḍa birds; but if it does not accord with the teachings, what is worn will have no efficacy."