1… "Venerable sir, what is the cause and reason why it sometimes becomes stormy?"

"There are, bhikkhu, what are called storm-cloud devas. When it occurs to them, ‘Let us revel in our own kind of delight,’ then, in accordance with their wish, it becomes stormy. This, bhikkhu, is the cause and reason why it sometimes becomes stormy."

1Sāvatthinidānaṁ. Ekamantaṁ nisinno kho so bhikkhu bhagavantaṁ etadavoca: "ko nu kho, bhante, hetu, ko paccayo, yenekadā abbhaṁ hotī"ti?

"Santi, bhikkhu, abbhavalāhakā nāma devā. Tesaṁ yadā evaṁ hoti: ‘yannūna mayaṁ sakāya ratiyā vaseyyāmā’ti, tesaṁ taṁ cetopaṇidhimanvāya abbhaṁ hoti. Ayaṁ kho, bhikkhu, hetu, ayaṁ paccayo, yenekadā abbhaṁ hotī"ti.

Pañcapaññāsamaṁ.