The caliphate of Prophecy will last thirty years; then Allah will give the Kingdom to whom he wishes; or his kingdom to whom he wishes.
قَالَ رَسُولُ اللَّهِ ﷺ خِلاَفَةُ النُّبُوَّةِ ثَلاَثُونَ سَنَةً ثُمَّ يُؤْتِي اللَّهُ الْمُلْكَ مَنْ يَشَاءُ أَوْ مُلْكَهُ مَنْ يَشَاءُ
[Machine] The Messenger of Allah ﷺ said, "The caliphate of prophethood will last for thirty years, then Allah will give it to whomever He wills, or He will give His kingdom to whomever He wills." Sa'id said, "Abu Bakr held it for two years, and 'Umar held it for ten years, and 'Uthman held it for twelve years, and 'Ali held it for six years."
قَالَ رَسُولُ اللهِ ﷺ «خِلَافَةُ النُّبُوَّةِ ثَلَاثُونَ سَنَةً ثُمَّ يُؤْتِي اللهُ مَنْ يَشَاءُ أَوْ قَالَ مُلْكَهُ مَنْ يَشَاءُ» قَالَ سَعِيدٌ «أَمْسَكَ أَبُو بَكْرٍ سَنَتَيْنِ وَعُمَرُ عَشْرًا وَعُثْمَانُ ثِنْتَيْ عَشْرَةَ وَعَلِيٌّ سِتًّا»
"خِلَافَةُ النُّبُوَّةِ ثلاثونَ سنةً، ثُمَّ يُؤتِى اللَّهُ المُلْكَ من يشاءُ".