Skandapurana 8.9.23_137

8.9.23_137

tasya paścimabhāge tu nātidūre vyavasthitam .. gaṃgeśvaramiti khyātaṃ gaṃgayā
yatpratiṣṭhitam ..
7.1.285.30 .. vātāpibhakṣaṇepūrvamagastyena
mahātmanā .. daityasaṃbhakṣaṇotpannasarvapātakaśuddhaye ..

On the western side of it, situated not very far away, / is that known as Gaṅgeśvara, which was established by Gaṅgā. / Formerly, at the eating of Vātāpi, by the great-souled Agastya, / for the purification of all sin born of consuming the daitya,