Ayodhya Mahatmyam is a text that consists of 10 chapters describing various holy waters and holy shrines of ayodhya, this text is a part of Vashnava Kanda from Skanda Purana.
Chapter Five of Ayodhya Mahatmyam tells us about the story of sage kautsa, the greatness of Sambheda teertha and sarayu tilodaki.