vijñāna-dhiṣṇyo bhagavān ajaḥ kila
yat-sambhavo ’haṁ tri-vṛtā sva-tejasā
vaikārikaṁ tāmasam aindriyaṁ sṛje
sthitāḥ śakuntā iva sūtra-yantritāḥ
mahān ahaṁ vaikṛta-tāmasendriyāḥ
sṛjāma sarve yad-anugrahād idam
A summary of creation is given in this verse. From Saṅkarṣaṇa, Mahā-Viṣṇu expands, and from Mahā-Viṣṇu, Garbhodakaśāyī Viṣṇu expands. Lord Brahmā, who was born of Garbhodakaśāyī Viṣṇu, fathers Lord Śiva, from whom all the other demigods gradually evolve. Lord Brahmā, Lord Śiva and Lord Viṣṇu are incarnations of the different material qualities. Lord Viṣṇu is actually above all material qualities, but He accepts control of sattva-guṇa (the mode of goodness) to maintain the universe. Lord Brahmā is born from the mahat-tattva. Brahmā creates the entire universe, Lord Viṣṇu maintains it, and Lord Śiva annihilates it. The Supreme Personality of Godhead controls all the most important demigods — especially Lord Brahmā and Lord Śiva — exactly as the owner of a bird controls it by binding it with a rope. Sometimes vultures are controlled in this way.