Skandapurana 6.3.230.50

6.3.230.50

saṅgamo mokṣanadyāśca tīrthaṃ ca vimaleśvaram .
tathaivolūkatīrthaṃ ca puṣkariṇyāśca saṅgamaḥ .. 230.50 ..

and the confluence of the Mokṣa river, and the sacred ford Vimaleśvara; / likewise the sacred ford Ulūka, and the confluence of the Puṣkariṇī;