Daughter of Manu. As per Taithiriyabrahmana, once Manu got to know that the devas and asuras had conducted an agni ceremony (yajna) and sent Ida to find out whether it was done correctly. Ida found that they hadn’t done so and told Manu that his yajna shouldn’t suffer from the same faults. She volunteered to place the three agnis in the correct places. Manu agreed, started the yajna and the devas prospered.

Later, both the devas and asuras wanted Ida to align with them. Ida chose the devas and as per the Taithiriyasamhita, with her did all living beings.