Shiva Purana
न तद्व्योम महत्तेजो व्यक्तान्तश्चाभवत्ततः ॥ रुद्रसाधारणं चैव चिह्नितं विकृताकृति ॥ ६॥
That great splendour was not of the sky too. Thereafter its middle became clearly manifested in the form characteristic of Rudra of deformed shape.
english translation
na tadvyoma mahattejo vyaktAntazcAbhavattataH ॥ rudrasAdhAraNaM caiva cihnitaM vikRtAkRti ॥ 6॥
hk transliteration by Sanscript