A--- Abu Dawud da wasu sun ruwaito daga Sa'id Ibn Jamhan, daga Safinah, yana cewa: Manzon Allah ﷺ ya ce:

A--- Narrated Abu Dawud and others on the authority of Sa'id Ibn Jamhan after Safinah as saying: Allah's Messenger (Peace be upon him) says:

"Khilafah bayan Annabta za ta dore shekaru talatin, sannan Allah ya bada mulki ga wanda Ya so." (At-Tirmidhi, Abu Dawud, Ahmad da Al-Hakim)

"The Caliphate after Prophethood will last for thirty years, then Allah grants kingship to whom He wills." (At-Tirmidhi, Abu Dawud, Ahmed and Al-Hakim)

Wannan yana nuna lokacin da Abu Bakr, 'Umar, 'Uthman da `Ali suka yi mulki, Allah ya yarda da su baki ɗaya. Abu Bakr ya zauna shekara biyu da wata uku, 'Umar shekara goma da wata shida, 'Uthman shekara goma sha biyu, `Ali shekara huɗu da wata tara, kuma domin cika shekara talatin sai ga Bai'ah (Mubaya'ar biyayya) da aka yi wa Al-Hasan Ibn 'Ali, wato wata shida.

This implies the period lasted by Abu Bakr, 'Umar, 'Uthman and `Ali, may Allah be pleased with them all. Abu Bakr stayed for two years and three months, 'Umar for ten years and six months, 'Uthman for twelve years, `Ali for four years and nine months, and in completion of the thirty years comes the Bai'ah (Pledge of allegiance) given for Al-Hasan Ibn 'Ali, that is six months.

Sarkin Musulmi na farko shi ne Mu'awiyah (Allah ya yarda da shi), wanda shi ne mafi alheri a cikinsu duka. Sai bayan haka ya biyo mulki mai tsanani da zalunci, har zuwa lokacin da 'Umar Ibn 'Abdel'Aziz ya zo. Lallai malaman Sunna sun ɗauke shi a matsayin Khalifa na biyar, domin ya bi hanyoyin (waɗanda suka gabace shi, wato halifofi huɗun) kamar yadda suka bi.

The first Muslim king was Mu'awiyah (May Allah be pleased with him) who was the best among them all. Then, followed a severe and unjust kingship, up till the time when `Umar Ibn 'Abdel'Aziz came. Indeed, the Sunni Muslim scholars regarded him as the fifth Caliph as he followed their (the previous four ones) very steps.