The description of the Jaya ablution - Verse 249

The glorious lord said: Homa in the western Kuṇḍa is then, performed by repeating the Sadya mantra with all materials in due order. “I resort to Sadyojāta. Obeisance to Sadyojāta. When attacked by worldly existence come to my succour. Obeisance unto the origin of the world. The intelligent devotee shall perform Homa by repeating this mantra ending with Svāhā. He shall perform Homa in the south-eastern Kuṇḍa by repeating the mantra pertaining to Rudra.[21] “In. the sacrificial rite we shall extract the juice of Soma” etc.[22] By repeating this mantra Homa shall be performed in the south-western Kuṇḍa with all materials of worship.