Skandapurana 16.4.989_14

16.4.989_14

antardhānaṃ gatairnityaṃ prabhāsaṃ tu niṣevyate ..
saptalokeṣu ye santi siddhāḥ pātālavāsinaḥ ..
pradakṣiṇaṃ te kurvaṃti someśaṃ kālabhairavam .. 102 ...

and siddhas attend upon Prabhāsa, having become invisible. / The siddhas living in Pātāla who dwell in the seven realms / circumambulate Someśa, who is Kālabhairava. // 102