Answer : 4. "प्रतिहार वंश"
Explanation :

1. Mahavir Jain Temple is built in Osian in Jodhpur district of Rajasthan.

2. Temple Oswal is an important pilgrimage site of the Jain community.

3. The temple is a place of pilgrimage for both Jains and Hindus.

4. It was built in 783 AD by King Vatsaraja during the Gurjara-Pratihara dynasty.

5. The Jain temple is dedicated to Mahavira and belongs to the Shwetambar sect of Jainism.