Form

Agni has three forms, namely 

1. fire, 
2. lightning and 
3. the Sun, 

forms sometimes symbolized by giving his icon three heads or three legs.

Ten different forms of Agni is recognised:

1. Regular Fire, 
2. Sacrificial Fire produced from Arani or Idhma, which is by rubbing the fire-sticks, 
3. Initiation Fire at Upanayana ceremony of a child coming of age, 
4. Fire kept in the house for Domestic rituals, 
5. Fire spread by Lightening, 
6. Fire in the Sun, 
7. Southern Fire for ancestors, 
8. Funeral Fire used for cremation, 
9. Digestive Fire, Jatharagni, and the last but most potent of all 
10. Destructive Fire or Davagani which initiates the process of Maha-pralaya.