Bhagavatapurana 8.18.20

8.18.20

śrutvāśvamedhairyajamānamūrjitaṃ baliṃ bhṛgūṇāmupakalpitaistataḥ /
jagāma tatrākhilasārasambhṛto bhāreṇa gāṃ sannamayan pade pade //

20. Then hearing that Bali of great power was engaged as a sacrificer in Aswamedha performances conducted by the Brahmins of the Bhrigu Race, He went thither bearing in Himself the essence of all strength and causing the earth to bend at every step on account of that weight.