About 2.5 million Muslims from across the world, including some one lakh 70 thousand pilgrims from India will perform Haj today in Saudi Arabia. Marking the beginning of five-day pilgrimage, Haj pilgrims converged at Mina yesterday. After offering morning prayers, they will proceed to Mount Arafat today for the main ritual of Haj-reciting prayers. They will listen the Khutba-e-Haj and offer midday and afternoon prayers together before leaving for Muzdalifah.