Skandapurana 1.4.65.9

1.4.65.9

8 tato nirāśasyendradyumnasya vārtāvijñānārthaṃ nāḍījaṃghenātmano'pi dīrghāyuṣasya prākārakarṇanāmakasyolūkasya samīpaṃ prati mārkaṇḍeyendradyumnayornayanam, tena prākārakarṇolūkenāpīndradyumnavārtānabhijñānakathanottaramindradyumnapraśre nijadīrghāyuṣṭvakāraṇakathanam,
tatprasaṃgena bilvadalamāhātmyavarṇanam....... 92 2

8. Then, in order to find knowledge of the history of the despondent Indradyumna, Nāḍījaṅgha leading Mārkaṇḍeya and Indradyumna into the presence of an owl named Prākārakarṇa, who was longer-lived than himself; after that owl Prākārakarṇa also stated his unawareness of Indradyumna's history, his explaining the cause of his own long life upon Indradyumna's question; in that connection, the description of the māhātmya of the bilva leaf. 92 2