In the heart of Mumbai lies Dharavi, Asia’s largest slum, housing thousands of small businesses and hundreds of thousands of people on more than 600 acres. The Maharashtra government has been fighting for decades to restore Dharavi as a planned mixed-use development with homes, offices and small industries. On Monday, the Adani group emerged as the top bidder in a global tender to redevelop the sprawling slum, adjacent to the Bandra-Kurla business hub and Mumbai airport. Dharavi holds on to the promise of being rebuilt as Shanghai reconstructed Lujiazui. For the Adani group, this is an opportunity to show the world its ability to execute, similar to how the Ambanis built the Jamnagar refinery.