Shiva Purana

siva.sh/siva-purana/kotirudra-samhita/18/3

सूत उवाच।। ॐकारे परमेशाख्यं लिंगमासीद्यथा द्विजाः।। तथा वक्ष्यामि वः प्रीत्या श्रूयतां परमर्षयः।। ३।।

sanskrit

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