[374] At that time the Buddha, the Blessed One, was dwelling at Sāvatthī, in the Jeta Grove, Anāthapiṇḍika's monastery. Now at that time, in the winter season, bhikkhus, having set out lodgings (senāsana) in the open air, were warming their bodies; when the time (for the meal) was announced, departing, they neither put them away nor had them put away, and they departed without taking leave. The lodgings were rained upon. Those bhikkhus who were of few wishes … they criticized, deplored, and complained: "How can bhikkhus, having set out lodgings in the open air, when departing neither put them away nor have them put away, and depart without taking leave? The lodgings were rained upon." Then those bhikkhus reported this matter to the Blessed One. Then the Blessed One questioned the bhikkhus: "Is it true, as they say, bhikkhus, that bhikkhus, having set out lodgings in the open air, when departing neither put them away nor have them put away, and depart without taking leave, and the lodgings were rained upon?" "It is true, Blessed One." The Buddha, the Blessed One, rebuked them: "How can these foolish men, bhikkhus, having set out lodgings in the open air, when departing neither put them away nor have them put away, and depart without taking leave? The lodgings were rained upon. This, bhikkhus, is not for the gaining of confidence by those without confidence … And thus, bhikkhus, you should recite this training rule:
"Whatever bhikkhu, having spread out, or having caused to be spread out, in the open air a bed, a bench, a mattress, or a cane chair belonging to the Saṅgha, when departing should neither put it away nor have it put away, or should go without taking leave, there is an offense entailing expiation (pācittiya)."
And thus this training rule was laid down by the Blessed One for the bhikkhus.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.