The town of Ayojjha, known today as Ayodhya, was situated on the banks of the Sarayu river during the 7th century B.C.
This location corresponds to the ancient kingdom of Kosala Mahajanapada.
Kosala was one of the prominent Mahajanapadas in Ancient India during this period. Its territory included the region where Ayojjha/Ayodhya was a significant urban center, strategically located along the Sarayu river.
Based on historical and geographical records, Ayojjha's position on the Sarayu river firmly places it within the Kosala Mahajanapada.