Aditya Hrudayam is a Hindu devotional hymn dedicated to Āditya or Sūrya found in the Yuddha Kānda of Vālmīki's Rāmāyana. It was recited by the sage Agastya to Rāma in the battlefield before fighting with the asura king Rāvaṇa. In it, Agastya teaches Rāma the procedure of worshiping Āditya to defeat the enemy.