রাসুলুল্লাহ (ﷺ) কর্তৃক তাঁর পরবর্তী খিলাফতের মেয়াদ ত্রিশ বছর নির্ধারণ এবং অতঃপর তা যুলুমপূর্ণ রাজতন্ত্রে পরিণত হওয়ার ইঙ্গিত

Previously mentioned was the hadith narrated by Ahmad, Abu Dawud, al-Nasa'i, and al-Tirmidhi - who graded it hasan (fair) - through the chain of Sa'id ibn Jahman from Safinah, that the Messenger of Allah (ﷺ) said:

"The Caliphate after me will last for thirty years, then it will become a kingdom."

These thirty years encompassed the caliphates of Abu Bakr al-Siddiq, 'Umar al-Faruq, 'Uthman the martyr, and 'Ali ibn Abi Talib - likewise a martyr (may Allah be pleased with them all). Its conclusion and completion were marked by the six months governed by al-Hasan ibn 'Ali after his father. Upon the exact completion of the thirty years, he abdicated the authority in favor of Mu'awiyah ibn

Abi Sufyan in the fortieth year [of Hijrah], whereupon the oath of allegiance united unanimously behind Mu'awiyah ibn Abi Sufyan. That year was subsequently named 'the Year of Unity' ('Am al-Jama'ah). We have already expounded upon this in detail in the preceding sections.