Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
nasai-kubra:8099Aḥmad b. Sulaymān > Yazīd > al-ʿAwwām > Saʿīd b. Jamhān

[Machine] "On the authority of the companion of the Messenger of Allah ﷺ , he said: The Messenger of Allah ﷺ said, 'The caliphate in my nation will be for thirty years, then there will be kingship after that.' He said, 'So we calculated, and we found Abu Bakr, Umar, Uthman, and Ali."  

الكبرى للنسائي:٨٠٩٩أَخْبَرَنَا أَحْمَدُ بْنُ سُلَيْمَانَ قَالَ حَدَّثَنَا يَزِيدُ قَالَ أَخْبَرَنَا الْعَوَّامُ قَالَ حَدَّثَنِي سَعِيدُ بْنُ جَمْهَانَ

عَنْ سَفِينَةَ مَوْلَى رَسُولِ اللهِ ﷺ قَالَ قَالَ رَسُولُ اللهِ ﷺ «الْخِلَافَةُ فِي أُمَّتِي ثَلَاثُونَ سَنَةً ثُمَّ مُلْكًا بَعْدَ ذَلِكَ» قَالَ فَحَسَبْنَا فَوَجَدْنَا أَبَا بَكْرٍ وَعُمَرَ وَعُثْمَانَ وَعَلِيًّا