aika-patyaṁ ca dehinām
yan na riṣyati karhicit
Lord Brahmā obtained his supreme position due to long austerities and penances, mystic yoga, meditation and so on. Hiraṇyakaśipu wanted a similar position. The ordinary powers achieved by mystic yoga, austerities and other processes are sometimes vanquished, but the powers obtained by the mercy of the Lord are never vanquished. Hiraṇyakaśipu, therefore, wanted a benediction that would never be vanquished.
Thus end the Bhaktivedanta purports of the Seventh Canto, Third Chapter, of the Śrīmad-Bhāgavatam, entitled “Hiraṇyakaśipu’s Plan to Become Immortal.”