Shiva Purana
तदूर्द्ध्वं स्मृतवान्रुद्रो वीरभद्रम्महाबलम् ॥ आत्मनो भैरवं रूपं प्राह प्रलयकारकम् ॥ २ ॥
Thereafter Rudra remembered the powerful Vīrabhadra, the cause of dissolution and addressed Bhairava, his own form.
english translation
tadUrddhvaM smRtavAnrudro vIrabhadrammahAbalam ॥ Atmano bhairavaM rUpaM prAha pralayakArakam ॥ 2 ॥
hk transliteration by Sanscript