Skanda Purana 6.2.85.43

6.2.85.43

42 atha gaṅgeśvaraliṃgamāhātmyavarṇanam, tatra śivajaṭājūṭato bhūmyāṃ gaṅgāprapātena śiprātaṭe gaṅgeśvaretināmnā bhagīrathasthāpitaliṃgamāhātmyam, gaṅgeśvarapūjanādividhimāhātmyavarṇanam -.. -. -.. -. -. ... -.. 117 2

42. Now begins the description of the māhātmya of the Gaṅgeśvara liṅga: There, on account of the descent of the Gaṅgā from the matted hair of Śiva to the earth, the māhātmya of the liṅga installed on the bank of the Śiprā by Bhagīratha under the name Gaṅgeśvara; the description of the māhātmya of the rules of worshipping Gaṅgeśvara and so forth. ... 117.2