Shiva Purana
तस्यैव कैवल्यरतेर्द्वितीयेच्छा ततोभवत् ॥ स एव सगुणो जातश्शिव इत्यभिधीयते ॥ ३॥
Then he had a second desire for liberation He alone is born with the modes of nature and is called Shiva.
english translation
tasyaiva kaivalyaraterdvitIyecchA tatobhavat ॥ sa eva saguNo jAtazziva ityabhidhIyate ॥ 3॥
hk transliteration by Sanscript