律戒本疏 1.41

1.41

二十種種販買　有一梵志。著赤色衣來詣跋難陀。跋難陀見之貪心內發。巧說方便以故衣易之。後懺悔還索。難陀不還。彼大愁惱。怨嘆盈路。將以難陀貿易。彼衣本為販買。不為自畜故。因是結戒。不得販販之人。於一切人非人。盡生惡心。所得財物以供三寶。三寶不受。令知慚愧。一切販賣所得之物悉皆捨墮。應眾中悔過。為利故買。買已不賣。賣不買皆突吉羅。若以同易異。以同易同。展轉求一一捨墮。貿易衣七日聽還悔過也。

Twenty: Various types of buying and selling. There was a brahmin who, wearing a red-colored garment, came to visit Upananda. When Upananda saw it, greed arose within him, and through skillful means he traded an old robe for it. Later [the brahmin] regretted it and demanded it back, but Upananda would not return it. The former was filled with deep sorrow and distress, and his resentment and lamentation filled the road. That happened because Upananda traded with him. That robe was originally meant for selling, not for personal possession. On account of this, [the Buddha] formulated the precept: one must not engage in buying and selling. A merchant harbors ill-intent toward all humans and non-humans. If the wealth and goods obtained are offered to the Three Jewels, the Three Jewels will not accept them, so that he may be brought to recognize shame and conscience. All goods obtained from buying and selling are subject to forfeiture and pāyattika (nissaggika-pāyattika), and one must confess before the assembly. Buying for the sake of profit: having bought, not selling, or selling and not buying, both incur a duṣkṛta. If one exchanges an identical item for a different one, or exchanges an identical item for an identical one, successively seeking [profit], each [act] is a forfeiture and pāyattika. For trading robes, one is allowed seven days to return them and confess one's fault.