Manasara 2.4

2.4

viśvabhūriti nāmaitatpūrvavaktraṃ prakīrtitam
dakṣiṇe viśvavidvaktraṃ viśvastaśca tathottare

The eastern face is declared by the name Viśvabhū; / on the south is the Viśvavid face, and likewise on the north is Viśvastha;