Shiva Purana
सूत उवाच॥ ॐकारे परमेशाख्यं लिंगमासीद्यथा द्विजाः॥ तथा वक्ष्यामि वः प्रीत्या श्रूयतां परमर्षयः॥ ३॥
Sūta said:— O brahmins, O great sages, I shall describe to you with pleasure how the phallic image of lord Śiva named Parameśa manifested from Oṃkāra. Let it be heard.
english translation
sUta uvAca॥ OMkAre paramezAkhyaM liMgamAsIdyathA dvijAH॥ tathA vakSyAmi vaH prItyA zrUyatAM paramarSayaH॥ 3॥
hk transliteration by Sanscript