Da Yu Long Pusa, also known as Nagarjuna Bodhisattva, was a prominent Mahayana Buddhist philosopher and scholar from ancient India, active around the 2nd to 3rd century CE. He is most renowned for authoring the *Mūlamadhyamakakārikā* (Fundamental Verses on the Middle Way), a foundational text for the Madhyamaka school of Mahayana Buddhism.