Shiva Purana
मध्यमेश्वरमीशानं भक्ताभीष्टवरप्रदम् ॥ तावद्ददर्श पुण्यात्मा मध्येलिंगं महेश्वरम् ॥ ९२ ॥
The holy sage saw lord Madhyameśvara, the bestower of desires of the devotees, in the midst of the Liṅga.
english translation
madhyamezvaramIzAnaM bhaktAbhISTavarapradam ॥ tAvaddadarza puNyAtmA madhyeliMgaM mahezvaram ॥ 92 ॥
hk transliteration by Sanscript