Sūta narrated: The (individual soul) is remembered as Puruṣa because of its relationship with Sat (the Existent i.e. the Brahman) by way of enjoyment of worldly pleasures. Also the supreme soul is called Brahman because it is Bṛhat (very huge) and because it causes all the living beings to increase in size (Bṛṃhaṇatva). (It is possible) because it is the basis of everything. It is defined as Brahmā because it causes the liviṇg beings to increase in size and because it fills all the bodies with blessings.