Prithviraj allowed him to go despite his generals asking him not to do so. In first battle of Taraori in 1191 Prithviraj Chauhan's cavalry charged and routed the Ghurid cavalry and captured Ghori.
After this defeat he never entered India through Gujarat. Battle was fought at Kayadara near Mount Abu, in 1178 A.D. Mularaja-II was not even a teen yet and his mother organized the defences of Pattan.
First time he was routed in present day Gujarat by Rajputs. Muhammad Ghori attacked India multiple times. His father was Someshwar Chauhan and mother Karpuri Devi, a Kalachuri (Chedi) princess, daughter of Achalaraja of Tripuri. Prithviraj Chauhan was born at Ajaymeru (Ajmer) in 1166 A.D.