四分律行事鈔資持記 2.1414

2.1414

九十。（佛在釋翅瘦，難陀短佛四指，人遙見謂佛，佛令難陀著黑衣，六群等佛量作，故制。）注戒，名過量三衣戒。《四分》三衣隨身長短，唯以佛衣為分齊。若爾，鉢量所以同者？答：由體別故（佛用石鉢）。衣量別者，以體同故。互彰同異，則無濫也。

[Pāyattika] 90. (The Buddha was in Śākya. Nanda was four finger-breadths shorter than the Buddha; people saw him from afar and thought he was the Buddha. The Buddha ordered Nanda to wear a blackened robe; the group of six made theirs of the Buddha's measure, so he laid down the prohibition.) The interlinear note names it the precept against three robes of excessive size. In the Dharmaguptaka-vinaya, the length of the three robes follows the height of one's body, taking only the Buddha's robe as the outer limit. If so, why is the bowl's measure identical? Answer: Because their material substance is different (the Buddha used a stone bowl). The robe's measurements differ because their substance is the same. Showing identity and difference mutually prevents confusion.