 After its release, The Oath of the Vayuputras received positive reviews for the story and characterisation with Business Standard calling Tripathi 'India's Tolkien '. However, his continued insistence on using modern, easy English gave way to a negative review by Mint. The book was a commercial success with 350,000 copies for pre-order, and an initial print-run of 500,000 copies. On the first day of the release itself, the book sold the initial print-run breaking the record for the fastest selling book in India. This prompted Westland to pay Tripathi an advance amount of ₹ 5 crore (US $ 740,000) for Tripathi's next book series. As of June 2015 over 2.5 million copies of the Shiva Trilogy have been sold with gross retail sales of over ₹ 60 crore (US $ 8.9 million), making it the fastest selling book series in the history of Indian publishing.
