Harakeli Nataka, a Sanskrit-language drama written by him, is inscribed on inscriptions discovered at the mosque site.
[3] Raviprabha's Dharmaghosha-Suri-Stuti states that the ruler of Malwa and Arisiha (possibly Arisimha of Mewar) assisted him in hoisting a flag at the Rajavihara Jain temple in Ajmer.
It probably also included a part of Punjab (to the south-east of Sutlej river) and a portion of the northern Gangetic plain (to the west of Yamuna).
[5] The play Lalita-Vigraharaja-Nataka, composed by Vigraharaja's court poet, claims that his army included 1 million men; 100,000 horses; and 1,000 elephants.
[5] Vigraharaja's father Arnoraja had suffered a humiliating defeat at the hands of Kumarapala, the Chaulukya king of Gujarat.
The inscription describes Sajjana as "the most wicked person of the land", who was sent to the abode of Yama (the god of death) by Vigraharaja.
[6] A Chahamana prashasti (eulogy) boasts that Vigraharaja reduced Kumarapala to a karavalapala (probably the designation of a subordinate officer).
[11] The Bijolia rock inscription states that Vigraharaja conquered Ashika (identified with Hansi) and Delhi.
Vigraharaja put an end to this long conflict by decisively defeating the Tomaras, who had grown weak under attacks from the Chahamanas, the Gahadavalas and the Muslims.
[13] An old bahi (manuscript) states that Visaladeva i.e. Vigraharaja captured Delhi from Tamvars (Tomaras) in the year 1152 CE (1209 VS).
According to Singh, Desaladevi, who has been mentioned in the play Lalita-Vigraharaja-Nataka as Vigraharaja's lover, might have been the daughter of a Tomara king named Vasantapala.
[15] The Delhi-Shivalik pillar inscription boasts that he destroyed the mlechchhas (foreigners), and once again made Aryavarta ("the land of Aryans") what its name signifies.
Historian Dasharatha Sharma identified Hammira with Khusrau Shah, and assumed that Vigraharaja repulsed his invasion.
According to Singh's theory, the "Hammira" on the play might have been Bahram Shah, who fled to India after the Ghurids defeated him at the Battle of Ghazni (1151).
[19] The king commissioned a centre of learning in Ajmer, which was later destroyed by the Ghurid invaders and converted into the Adhai Din Ka Jhonpra mosque.
Several literary works were engraved on stones at this centre:[20] According to Prithviraja-Viajaya, Vigraharaja commissioned as many buildings as the hill forts he captured.
[25] Historian Dashratha Sharma calls him "Vigraharaja the Great" and describes his reign as the "Golden age of Sapdalaksha" (the Chauhan Territory).