(FILES) Hindu pilgrims arrive to take a holy dip in Sangam, the confluence of Ganges, Yamuna and mythical Saraswati rivers during the Maha Kumbh Mela festival in Prayagraj on February 5, 2025. The unfathomable scale of the world's largest religious festival in India overshadows many nations in size -- and for the economy, its impact is just as dramatic. (Photo by Idrees MOHAMMED / AFP) / To go with AFP story India-Religion-Festival-Economy,FOCUS by Bhuvan Bagga (Photo by IDREES MOHAMMED/AFP via Getty Images)