律戒本疏 1.91

1.91

三十八殘宿食食　應言受宿食食。無殘字也。道貴小欲。無所藏積。猶如飛鳥不留餘。而世喚比丘。一日再乞食。一已足留一乾之明日受食。以此因緣不聽宿食法。貪著故。離白衣法故。若今日手受明日食。是名受宿食。食者犯墮。不手受而不淨施明日受食犯突。手受已淨施人明日食亦犯墮。受而不淨施明日與人無犯。若心捨已了彼還返施食之無犯也。

Thirty-eight: Eating leftover food stored overnight. One should say 'receiving food stored overnight and eating it'; there should be no character for 'leftover' (can). The Path values having few desires and storing nothing, like a flying bird that leaves no surplus behind. Yet worldly people would summon the monks, who begged for food twice in one day; having already had enough from one, they kept one and dried it to receive and eat on the next day. Due to this circumstance, the practice of [storing] overnight food was not permitted: because of greedy attachment, and in order to depart from the practices of laypeople. If one receives food by hand today and eats it tomorrow, this is called receiving overnight food; one who eats it commits an offense of pāyattika. If one does not receive it by hand and does not perform vikalpanā, but receives and eats it tomorrow, one incurs a duṣkṛta. If after receiving it by hand one performs vikalpanā with another person, yet eats it tomorrow, one also commits an offense of pāyattika. If one receives it but does not perform vikalpanā, and gives it to another person tomorrow, there is no offense. If one has mentally relinquished it, and the other person turns around and bestows it back, eating it is without offense.