Marble fit for a king entombs at Ajmer a lowly water bearer named Nizam, who saved the life of Emperor Humayun in 1539. Driven into Ganges by Afghan leader Sher Shah Humayun lost his hors and might have drowned had not Nizam rescued him with an inflated water skin. The grateful emperor seated him briefly on the on the throne, where he issued decrees before a scandalized court.
This is stated on 'National Geographic The 1980s' .May 1983-August 1986 of this CD-ROM.