When performing Hawans and Yagnas, one of the most common words people chant is ‘Swaha’. When they offer something to the fire, to Agni Dev, be it grains or flowers or ghee, they chant ‘Swaha’.When performing Hawans and Yagnas, one of the most common words people chant is ‘Swaha’. When they offer something to the fire, to Agni Dev, be it grains or flowers or ghee, they chant ‘Swaha’.