lahore with khan to visit his family. >> hi!k us to his boyhood home... >> khan: meet my guest. >> pitts: hello, ma'am. ...where we met his 89-year-old mother, zakia, a retired math professor, and his younger brother, faran, a businessman. how do you explain it? your son, your boy, is one of the richest men in the world. how do you explain that? >> zakia khan: well, it's his hard work. and luck, also. >> faran khan: as his friends say, he always knew about his destiny. he had that entrepreneur, i would say, instincts which made him succeed like this. >> pitts: khan's late father, rafiq, sold surveying equipment. he preached humility and frugality and encouraged his son's early business ventures. as a child, khan built and sold radios, and made his friends pay to borrow his comic books. and this is where the future owner of an american pro football team spent many afternoons as a boy, the city's cricket stadium, home to pakistan's national team. >> khan: this is where, you know, the big sports events happen. >> pitts: so this is