Skandapurana 6.3.219.2

6.3.219.2

tatra devāḥ sagandharvā ṛṣayo ye tathāmalāḥ .
koṭitīrthe parāṃ siddhiṃ samprāptā bhuvi durlabhām .. 219.2 ..

There, the gods with the gandharvas, and the spotless seers, / attained supreme siddhi, rare on earth, at Koṭitīrtha.”