Skanda Purana 4.101.16

4.101.16

14 rudrabhaktoṣitaiśānīpurīvarṇanam ,ajaikapādādirudragaṇasthāpitaiśānaliègamāhātmyavarṇanam, candralokavarṇanam, brahmaṇo mānasātsamudbhūtasya somasya vārāṇasyāṃ liṃgaṃ vidhāya tatpuro mahattapaścaraṇam, śivaprasādāttasya mahaiśvaryalābhakathanaṃ ca. 66 2

14 Description of the city of Aiśānī inhabited by devotees of Rudra; description of the greatness of the Aiśāna-liṅga established by the Rudra hosts such as Ajaikapād; description of the world of Candra; Soma, who arose from the mind of Brahmā, setting up a liṅga in Vārāṇasī and performing great austerity before it; and narration of his attainment of great sovereignty through Śiva's grace: 66 2.