When did shahbudin ghouri defeat prithivi raj?

Shahabuddin Ghouri defeated Prithviraj Chauhan in the First Battle of Tarain, which took place in 1191. However, Prithviraj Chauhan initially emerged victorious in this battle. Ghouri returned the following year, and in the Second Battle of Tarain in 1192, he successfully defeated Prithviraj, leading to the establishment of Muslim rule in northern India.