Dasaratha Jataka (Pali: Dasaratha Jātaka) is a Jataka tale found in Buddhist literature about a previous life of the Gautama Buddha. It is found as 461th Jataka story in Khuddaka Nikaya of Sutta Pitaka in the Pali Canon.
Here Sita is Rama Pandita’s sister and Rama did not fight Ravana because there was no abduction…only exile
based on the ancient Indian epic Ramayana and other adaptations of it such as the Thai Ramakien, Lao Phra Lak Phra Ram and Burmese Yama Zatdaw are claimed to derive from this Jataka