四分律刪繁補闕行事鈔 3.231

3.231

初納衣者。《四分》云：捨檀越施衣，著糞掃衣。《十住婆沙》云：比丘欲具足行持戒品，應著二種衣，謂居士施，糞掃得也。以有十利故：一慚愧。二障寒熱毒蟲。三表示沙門儀法。四一切天人見法衣，尊敬如塔。五厭離心者染衣，非貪好。六隨順寂滅，非為熾然煩惱。七由著法衣，有惡易見。八更不須餘物莊嚴故。九隨八聖道故。十我當精進行道，不以染污心於須臾間。《寶梁經》：周那沙彌洗糞掃衣，諸天取汁自洗身。

First, rag robes: The Dharmaguptaka Vinaya states: "Renounce robes donated by dānapatis and wear rag robes." The Daśabhūmika-vibhāṣā states: "If a bhikṣu wishes to fully practice and maintain the category of precepts, he should wear two kinds of robes: namely, those given by kulapatis, and those obtained from rags." This is because there are ten benefits: (1) modesty and shame; (2) shielding against cold, heat, and venomous insects; (3) manifesting the formal deportment of a śramaṇa; (4) all devas and humans, seeing the Dharma robe, revere it like a stūpa; (5) one who has a mind of renunciation dyes the robes, not out of coveting beauty; (6) it accords with quiescent cessation, not with blazing afflictions; (7) because one wears the Dharma robe, any wrongdoing is easily seen; (8) one does not need other things for adornment; (9) it accords with the eightfold noble path; (10) [one resolves,] 'I shall vigorously practice the path, and not let a defiled mind arise even for an instant.' The Ratnarāśi-sūtra states: "When the śrāmaṇera Cunda washed his rag robes, the devas took the water to wash their own bodies."