Pandit Madhusudan Ojha has extensively documented various terms appearing in the Vedic texts in Atrikhyati, Devasura-khyati and Madhav-khyati. These terms include brahma, dharma, yajna, itihas and vedanga. He categorised these books into four—yajna, vijnana, itihas and prakirna. (miscellaneous). Devasurkhyati forms part of his work on itihasa (history). In this work, he has explained the origin of Veda, dharma, praja, trailokya (triple worlds) and loka.