Gopinath Mohanty received the Jnanpith Award in 1973, primarily for his novel 'Mati Matala' (The Soil and the Stones). While he wrote other notable works like 'Paraja' and 'Amrutara Santana', 'Mati Matala' was the magnum opus that earned him India's highest literary honor. 'Dadi Budha' is another significant work but not the Jnanpith winner.