Ujjain is also named for its role in containing various phases of Hinduism and incessantly gave shelter to different religious groups who set out to preach Hinduism.
A king named Bhartruhari took sanyasa deeksha with Swami Gorakh Nath of Nath Sampradaya or lineage. Jadaroopa is one of the greatest saints who lived in the city of Ujjain. The mass meetings of Vaishnava tradition were called as Baithakas. There lived a great saint who belonged to Vaishnaya Sampradaya, named Vallabhacharya. This Vaishnava saint Vallabhacharya conducted 84 Vaishnava Sabhas or Baithakas representing Vaishnava Sandipani Ashram. 73 Baithaka or Vaishnava meeting was held in Ujjain under a peepal tree. Not only Vaishnavaits, many other mathas, peethas and ashramas belonging to different sampradayas and lineages, were established here in the city of Ujjain.
The most powerful Maha Kali peetham is also there in Ujjain. Ujjain is the city which emerged as the centre for all the religious diversifications and still stands as one of the most sought out pilgrim centres of India.