Harivamsha 3.58

3.58

dityāḥ putradvayaṃ jajñe kaśyapād iti naḥ śrutam
kaśyapasyātmajāv etau sarvebhyaḥ pūrvajau matau |
hiraṇyakaśipuś caiva hiraṇyākṣaś ca bhārata
siṃhikā cābhavat kanyā vipracitteḥ parigrahaḥ //

Two sons were born to Diti from Kaśyapa, so we have heard;
these two sons of Kaśyapa are considered the firstborn of all,
Hiraṇyakaśipu and Hiraṇyākṣa, O Bhārata;
and Siṃhikā was their daughter, the wife of Vipracitti.