Story of Jayanta and Sri Ram is found in the Ramayana. Bhagvan Sri Ram, Mata Sita and Lakshman were residing in the
during their exile period in the Ramayana. Jaynata, son of Indra, in the form a
crow was flying over the Chitrakuta and noticed the divine couple. Chitrakuta Mountain
Sri Ram was lying on the lap of Mata Sita and sleeping. Jayanta came in the form crow and scratched Mata Sita. The painful cry of Sita woke up Sri Ram.
Bhagavan Sri Ram immediately realized that the crow was Jayanta and shot the Brahmastra against him.
Fearing for his life, Jayanta flew all over the world. But the divine arrow followed him.
Trimurtis, Devas and Saints could not save Jayanta. Finally, Jayanta took refuge at the feet of Sri Ram.
Bhagvan Sri Ram said that the Brahmastra could never become futile so the arrow will hit the right of Jayanta. Accordingly, the arrow struck the right of eye of Jayanta.
Note – It is also stated in some scriptures that it was not Brahmastra but darbha grass that Sri Ram threw on Jayanta.