Rahul and Sobia 'Haldi ceremony'

The Haldi ceremony signifies the establishment of the Hindu wedding ceremony rituals. The ceremony is held on the morning of the wedding ceremony day at the bride and groom’s residence. A paste organized with (turmeric) Haldi, sandalwood, the curd is rubbed onto the bride’s and groom’s pores and skin earlier than a ceremonial bath.

Since it is one of the most necessary pre-wedding rituals it is celebrated as a grand function

Source : https://www.wedamor.com/everything-you-must-know-about-haldi-ceremony-in-indian-weddings/