Skandapurana 2.2.50.14

2.2.50.14

13 śaṃkaradhṛtakapotaveṣeṇa bhagavadārādhanāṃ kṛtvā tatprasādena kapoteśasthalīsthāpanama, tataḥ pātālavāsibhirdaityaiḥ pīḍitāṃ bhuvaṃ dṛṣṭvā tadasuranibarhaṇāya śrīkṛṣṇena bilvaphalaṃ
gṛhītvā bhagavadārādhanāṃ kṛtvā tryaṃbakakṛpayā asurāñjitvā bilveśakṣetrasthāpanam
tanmāhātmyavarṇanaṃ ca... ... .. ... 76

13. Śaṃkara, having assumed the guise of a dove, performed the worship of the Lord and, through His grace, established the site of Kapoteśa; then, seeing the earth afflicted by the daityas residing in Pātāla, Śrī Kṛṣṇa, in order to destroy those asuras, took a bilva fruit and performed the worship of the Lord, and by the grace of Tryambaka defeated the asuras and established the Bilveśakṣetra; and the description of its māhātmya. 76