Shiva Purana
अष्टबाहुं चतुर्वक्त्रमर्धनारीकमद्भुतम् ॥ दृष्ट्वैवमद्भुताकारं देवा विष्णुपुरोगमाः ॥ २९ ॥
He had eight arms, four faces and half a woman. Seeing this wonderful figure the devatas led by Lord Visnu.
english translation
aSTabAhuM caturvaktramardhanArIkamadbhutam ॥ dRSTvaivamadbhutAkAraM devA viSNupurogamAH ॥ 29 ॥
hk transliteration by Sanscript