When Rama was exhausted in battle field standing with greater sorrow and deep thought to fight against Ravana who was duly prepared for the battle, Agastya observed that.
राम राम महाबाहो शृणु गुह्यं सनातनम्। येन सर्वानरीन् वत्स समरे विजयिष्यसि॥
sanskrit
Sage Agastya approached Rama and spoke as follows: dear Rama there is a solution for your worry which is a perennial secret, by reciting it you would be victorious in this war.
When Rama was exhausted in battle field standing with greater sorrow and deep thought to fight against Ravana who was duly prepared for the battle, Agastya observed that.
राम राम महाबाहो शृणु गुह्यं सनातनम्। येन सर्वानरीन् वत्स समरे विजयिष्यसि॥
sanskrit
Sage Agastya approached Rama and spoke as follows: dear Rama there is a solution for your worry which is a perennial secret, by reciting it you would be victorious in this war.