Bhagavatapurana 8.18.22

8.18.22

te ṛtvijo yajamānaḥ sadasyā hatatviṣo vāmanatejasā nṛpa /
sūryaḥ kilāyāty uta vā vibhāvasuḥ sanatkumāro 'tha didṛkṣayā kratoḥ //

22. Those priests, the sacrificer (Bali) and the members of the

sacred assembly had their splendour eclipsed by the glory of Vamana! O king, they said "It is indeed Surya himself, or Sanatkumara that comes up to see the sacrifice; or is it God Agni?"