Hanuman is Mahavira Garuda. This face points towards the west. Worship of Garuda is believed to remove the effects of poisons from one’s body. In Tamil Vaishnavism Garuda and Hanuman are known as “Periya Thiruvadi” and “Siriya Thiruvadi” respectively. In the Bhagavad-Gita (Ch.10, Verse 30), in the middle of the battlefield