In Hindu tradition, Triveni Sangam is the confluence of three rivers that is a sacred place, with a bath here said to flush away all of one's sins and free one from the cycle of rebirth. From Wikipedia
Mukesh Ambani and his family, including Anant Ambani and Radhika Merchant, participated in the sacred rituals at Prayagraj's Triveni Sangam, showcasing elegant traditional attire.