Shiva Purana

siva.sh/siva-purana/saturda-samhita/12/6

न तद्व्योम महत्तेजो व्यक्तान्तश्चाभवत्ततः ।। रुद्रसाधारणं चैव चिह्नितं विकृताकृति ।। ६।।

sanskrit

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