Skandapurana 16.363.2

16.363.2

tatraikādaśarudrāṇāṃ sthānaliṃgānyapi priye ..
ajaikapādahirbudhnyaḥ saṃtītyādīni nāmataḥ ..
pūjayettāni vidhivanmucyate sarvapātakaiḥ .. 2 ..

There are the sites and liṅgas of the eleven Rudras, O dear one,
namely Ajaikapād, Ahirbudhnya, and others by name;
one should worship them according to rule and be freed from all sins.