四部律并論要用抄 2.39

2.39

從非親里居士乞衣戒　僧祇云。若乞灑水囊。若乞小補衣物。若繫頭物。若裹瘡物。若衣緣。若乞衣中一條。如是等物不犯。若如是乞時。檀越以全物及衣截施取者不犯。若作念我但索小物。檀越自當與我全衣。得犯捨。離波多苦脚冷。從一白衣乞裹脚。欽婆羅衣得已生疑。佛不聽。從非親里乞衣。即往白佛。佛言。如是聽乞所應受持衣。若護[跳-兆+專]衣護髀衣拭手巾等。拭面身體巾等　又五分云。壞時。

The precept on begging for robes from an unrelated householder.
The Mahāsāṃghika-vinaya states: If one begs for a water-straining bag, small patches to mend a robe, a head-binding cloth, cloth to wrap sores, a robe border, or cloth for one strip of a robe, items such as these entail no offense. If when begging in this manner the dānapati gives a whole piece of cloth or a cut robe, taking it entails no offense. If he thinks, “I will merely ask for a small item, and the dānapati will naturally give me a complete robe,” if he gets it, it is an offense requiring forfeiture. Revata suffered from cold feet and begged a layperson for a woolen wrap for his feet; after receiving it, doubt arose in him, because the Buddha did not allow begging for robes from unrelated persons. He went directly to report it to the Buddha. The Buddha said, “In such cases I allow begging for robes that one should maintain: such as ankle-protecting robes, thigh-protecting robes, hand-towels, face and body-towels, and the like.” Furthermore, the Mahīśāsaka-vinaya states: [allowed] when they are ruined.