Srimad Bhagavata Purana

The valleys between the mountains became fields of pleasure for Hiraṇyakaśipu, by whose influence all the trees and plants produced fruits and flowers profusely in all seasons. The qualities of pouring water, drying and burning, which are all qualities of the three departmental heads of the universe — namely Indra, Vāyu and Agni — were all directed by Hiraṇyakaśipu alone, without assistance from the demigods.