Azim Premji, India’s most generous billionaire, has announced a fresh bequest to his eponymous philanthropic initiative that boosts his total commitment to Rs 1.45 lakh crore ($21 billion), making it one of the five largest private endowments in the world and the biggest in Asia. This has cemented the 73-year-old billionaire’s place alongside the world’s most influential philanthropists including Bill Gates, George Soros and Warren Buffett.