The four Khulafa of the Holy Prophet are known as the Khulafa-e-Rashideen or the rightly guided successors. This Application is made on the biography of rightly guided caliphs or khulafa-e-rashideen in english. I hope all the single Muslim Brother and Sister Love this application. The name of four khulafa. 1st Khulafa - Hadrat Abu Bakr Siddiq