Shiva Purana
नैमिषारण्यतीर्थे तु निखिलर्षिप्रतिष्ठितम् ॥ ऋषीश्वरमिति ख्यातं शिवलिंगं सुखप्रदम् ॥ १४॥
The phallic image of Śiva known as Ṛṣīśvara installed by the sages in the holy centre of Naimiṣa forest, yields happiness.
english translation
naimiSAraNyatIrthe tu nikhilarSipratiSThitam ॥ RSIzvaramiti khyAtaM zivaliMgaM sukhapradam ॥ 14॥
hk transliteration by Sanscript