Shiva Purana
बहिरंतर्गता विश्वं व्याप्य तेजोमयी शुभा ॥ रौद्री रुद्राव्यया मूर्तिरास्थिता घोररूपिणी ॥ २२ ॥
The Mūrti of Rudra having terrible form, is stationed all over the universe internally and externally and it consists of fire.
english translation
bahiraMtargatA vizvaM vyApya tejomayI zubhA ॥ raudrI rudrAvyayA mUrtirAsthitA ghorarUpiNI ॥ 22 ॥
hk transliteration by Sanscript