Sūta said:: There Indras have overpowered all living beings whether mobile or immobile in the three worlds, by their Dharma (and other special reasons), by their brilliance, penance, intelligence, might, learning and exploit. I shall explain to you in details why (and how) these mighty ones are the dominant lords and masters of Bhūta, Bhavya and Bhavat, (try to) understand me as I recount. It is remembered by the Brāhmaṇas that Bhūta, Bhavya and Bhavat are the three worlds. This Bhūrloka (Earth) is remembered as Bhūta; the Antarīkṣa (Atmosphere) is remembered as Bhavat. The Diva (Heaven) is remembered as Bhavya. I shall mention their means (of derivation).