Under the auspices of Vaśiṣṭha, Pṛthu performs 99 horse-sacrifices to expand his empire. In this task, even the Āngiras priests lend their hand and stand on his side. At his hundredth sacrifice, Indra abducts the sacrificial horse to oppose him and in the subsequent battle, Pṛthu emerges victorious. The consequences of this incident are more apparent in the history of the Aila line of kings.