Mayamatam 19.44

19.44

purandaraṃ nyaset pūrvesubrahmaṇyamathāpi vā
dakṣiṇe vīrabhadraḥ syānnārasiṃhaśca paścime

In the east, one should place Purandara or else Subrahmaṇya; / in the south should be Vīrabhadra, and in the west Nārasiṃha;