Prithviraj defeated Muhammad Ghori for the first time. Prithviraj, ruler of Ajmer and Delhi, eloped with the daughter of Raja Jaichand, ruler of Kannauj. This led to a rift between these 2 major kingdoms of then India. When Muhaammad Ghori attacked India, the king of Kannauj refused to help Prithviraj. Still Prithviraj won the First Battle of Tarain and captured Ghori as prisoner of war but when Ghori begged for mercy, Prithviraj released him.