From the Ramayana

1, 2. Beholding Sri Rama, standing

absorbed in thought on the battlefield,

exhausted by the fight, and Ravana

facing Him, duly prepared for an

encounter, and approaching Sri Rama,

the glorious sage Agastya, who had

come in the company of gods to

witness the encounter now spoke as

follows:

3, 4, 5. Rama, O mighty-armed Sri

Rama, hearken to the following

eternal secret, in the form of a holy,

eternal, immortal and supremely

blessed and excellent encomium,

entitled the Aditya Hridaya, the

blessing of all blessings, by means of

which, my child, You will conquer

once for all Your adversaries on the

battlefield, and which is calculated to

bring victory, root out all sins, allay

all anxiety and grief once for all and

prolong life.

6. Worship the Sun-God, the ruler of

the worlds, who is crowned with rays,

who appears at the horizon, who is

greeted by gods and demons, and

brings light.

7. Indeed, He is the embodiment of

all gods and full of glory and creates

and sustains the gods and the demons

as well as their worlds by His rays.

8, 9, 10. Indeed, He is the same as

Brahma as well as Vishnu, Lord Shiva,

Skanda, Prajapati, the mighty Indra,

Kubera, Kala, Yama, Soma, Varuna, the

Pitris, the Vasus, the Sadhyas, the

Ashwins, the Maruts, Manu, Vayu