Uṇhavalāhakadānūpakāra sutta: How Giving Helps to Become a Warm Thundercloud God, Etc.

At Sāvatthī.

Seated to one side, that mendicant said to the Buddha:

“Sir, what is the cause, what is the reason why someone, when their body breaks up, after death, is reborn in the company of the gods of warm thunderclouds … stormy thunderclouds … windy thunderclouds … rainy thunderclouds?”

“Mendicant, it’s when someone does good things by way of body, speech, and mind. And they’ve heard: ‘The gods of rainy thunderclouds are long-lived, beautiful, and very happy.’ They think: ‘If only, when my body breaks up, after death, I would be reborn in the company of the gods of rainy thunderclouds!’ They give food … a lamp. When their body breaks up, after death, they’re reborn in the company of the gods of rainy thunderclouds. This is the cause, this is the reason why someone, when their body breaks up, after death, is reborn in the company of the gods of rainy thunderclouds.”