Prior to dying in August 634, Abu Bakr nominated Umar as his successor. Along with Muhammad, Abu Bakr is buried in the Green Dome at the Al-Masjid al-Nabawi in Medina, the second holiest site in Islam. He died of illness after a reign of 2 years, 2 months and 14 days, the only Rashidun caliph to die of natural causes.

Though Abu Bakr's reign was brief,