Skandapurana 6.3.224

Mārkaṇḍeya said:
Then, at the distance of one krośa, O son of Pṛthā, is the supreme sacred ford Koṭīśvara,
where ritual ablution, donation, recitation of mantras, fire-offerings, worship, and the like,
performed there with devotion by men, all become ten-millionfold in fruit. (1)

There the gods along with the gandharvas, the seers, siddhas, and cāraṇas,
went towards the ocean, it is said, to see the Narmadā. (2)

Assembled by the millions, O king, at the confluence of the Revā and the ocean,
having witnessed the peerless delight at the meeting of the Revā and the sea, (3)

having bathed, established Śiva, and worshipped Maheśvara
named Koṭīśvara, in accordance with their respective devotion and the prescribed rite, (4)

they attained supreme perfection at Koṭītīrtha by pleasing everything.
Therefore, it is peerless in merit and the best among all sacred fords. (5)

Whatever good or evil is done
at that sacred ford, O tiger among kings, all becomes multiplied ten million times. (6)

Whichever best of seers, standing on the path at that sacred ford,
go to the abode of the perfected and the nectar-like realm, so too do they reach the highest world of the ancestors. (7)

Those who have taken refuge on the northern bank of the Narmadā and on the southern bank,
have gone from there to the realm of the gods; such is my firm conviction. (8)

Having worshipped Maheśvara with bilva and arka flowers, dhattūra blossoms, kuśa and kāśa flowers,
and other seasonal flowers, (9)

with various offerings according to rule, preceded by mantras, O Yudhiṣṭhira,
and having pleased Dhūrjaṭi with incense, lamps, and food offerings, (10)

one attains the realm of Śiva for as long as fourteen Indras reign.
A special efficacy in worship is taught on the eighth day of the dark fortnight of Pauṣa. (11)

Constantly, O best of kings, and especially on the fourteenth and eighth lunar days,
having worshipped Śiva, one should feed excellent brahmins with devotion. (12)

Thus ends the two hundred and twenty-fourth chapter, titled 'Description of the Māhātmya of the Koṭīśvara Sacred Ford,' in the Revākhaṇḍa of the fifth Avantyakhaṇḍa, in the glorious Skanda Mahāpurāṇa consisting of eighty-one thousand verses.