Shiva Purana

siva.sh/siva-purana/saturda-samhita/9/3

कपालपाणिर्विश्वात्मा चचार भुवनत्रयम् ।। नात्याक्षीच्चापि तं देवं ब्रह्महत्यापि दारुणा ।। ३ ।।

sanskrit

He, the soul of the universe, roamed over the three worlds with the skull in his hand. The terrible Brahmahatyā never left Bhairava.

english translation

kapAlapANirvizvAtmA cacAra bhuvanatrayam || nAtyAkSIccApi taM devaM brahmahatyApi dAruNA || 3 ||

hk transliteration by Sanscript