The son born to Agastya and Lopamudra. His original name was Tridasyu. When Lopamudra was pregnant, Agastya asked her whether she wanted a thousand ordinary persons, or hundred sons each worth ten persons, or ten sons worth a hundred sons each or one son who equaled a thousand sons. Lopamudra asked for one son and this was Tridasyu. He was born after seven years of Lopamudra’s pregnancy. He recited the vedas as soon as he was born. Even when he was a child he would fetch wood for his father’s yajna. Thus he came to be known as Idhmavahana (one who carried firewood)