Shiva Purana
एवंभूता महात्मानो ब्रह्मणः सृष्टिहेतवे ॥ योगं प्रवर्त्तया मासुर्घोराख्यं महदद्भुतम् ॥ ३० ॥
The noble-souled beings of this nature initiated the great and wonderful Yoga called Ghora for the purpose of Brahmā’s creation.
english translation
evaMbhUtA mahAtmAno brahmaNaH sRSTihetave ॥ yogaM pravarttayA mAsurghorAkhyaM mahadadbhutam ॥ 30 ॥
hk transliteration by Sanscript