Nartana Seva is an important part of worship of Vishnu for some Vaishnava sects. In the Nartana Seva, all members form a circle and dance. It is performed during pujas and at the end of Jagarana during Ekadasi fasting.
While dancing devotees carry a plate of tulsi leaves which was earlier offered to the Lord. In some places, people dance with a pot of Tulsi plant.
The dancing with Tuli leaves or plant is known as Harivanaseva.