saila dronibhir akridam
sarvartusu gunan drumah
eka eva prthag gunan
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The valleys between the mountains became fields of pleasure for Hiranyakasipu, 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, Vayu and Agni — were all directed by Hiranyakasipu alone, without assistance from the demigods.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
It is said in the beginning of Srimad-Bhagavatam, tejo-vari-mrdam yatha vinimayah: this material world is conducted by fire, water and earth, which combine and take shape. Here it is mentioned that the three modes of nature (prthag gunan) act under the direction of different demigods. For example, King Indra is in charge of pouring water, the demigod Vayu controls the air and dries up the water, whereas the demigod controlling fire burns everything. Hiranyakasipu, however, by dint of his austere performance of mystic yoga, became so powerful that he alone took charge of everything, without assistance from the demigods.