In the Dhamma talk "Sleeping and dreaming", by Ajahn Punnadhammo, he mentions that in the Anguttara Nikaya (no specific sutta mentioned) the Buddha talked about the origins of dreams and different kinds of dreams.
He taught that some dreams could be visions of the past and future, messages from Devas and "Wind in the belly" meaning random content with no real significance.
What sutta is this?
Thank you for your time.