Matsyapurana 106.15

106.15

tato gaccheta rājendra prayāgaṃ saṃstuvaṃśca yat
yatra brahmādayo devā ṛṣayaḥ siddhacāraṇāḥ //

O King! The sacred place lying between the Ganges and the Yamunâ is venerated even by the Devas, Asuras, Sages, Ṛiṣis, Gandharvas. One should therefore go there with devotion, for Brahmâ, Devas, Ṛiṣis, Sages, Lokapâlas, Sâdhya Devas, Pitris, Sanatkumâra, etc., the greatest of the sages Aṅgirâ, etc. Brahma Ṛiṣis, serpents, suparnâs, oceans, rivers, mountains, vidyâdharas, Lord Viṣṇu Himself, along with Brahmâ, are present there.—14-18.