Shiva Purana

siva.sh/siva-purana/saturda-samhita/1/30

एवंभूता महात्मानो ब्रह्मणः सृष्टिहेतवे ।। योगं प्रवर्त्तया मासुर्घोराख्यं महदद्भुतम् ।। ३० ।।

sanskrit

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