The sublime Sufi Masters in the Chishti-Sabiri spiritual order have noted the first two Rashidun Caliphs are fathers-in-law while the last two Rashidun Caliphs are the sons-in-law of the Holy Prophet, upon whom be blessings and peace. The masters explain the fathers-in-law show the standards of excellence whereas the sons-in-law show the boundaries of this tradition. Subhan Allah.
“for the sake of the merit of ‘Uthman and ‘Ali“