Shiva Purana
इत्थमाश्वास्य ताम्पत्नीञ्जगाम तपसे मुनिः ॥ यत्र विश्वेश्वरः साक्षात्काशीनाथोऽधि तिष्ठति ॥ १९ ॥
After consoling his wife, the sage set out for penance to the city of Vārāṇasī where Lord Śiva himself is stationed.
english translation
itthamAzvAsya tAmpatnIJjagAma tapase muniH ॥ yatra vizvezvaraH sAkSAtkAzInAtho'dhi tiSThati ॥ 19 ॥
hk transliteration by Sanscript