[Machine] Abu Bakr was appointed as the successor on the day when the Messenger of Allah ﷺ passed away. Abu Bakr also passed away in the month of Jumada al-Akhirah in the thirteenth year of hijra, at the age of sixty-three, the same age as the Messenger of Allah ﷺ when he passed away, as mentioned by Aisha.
اسْتُخْلِفَ أَبُو بَكْرٍ ؓ فِي الْيَوْمِ الَّذِي تُوُفِّيَ فِيهِ رَسُولُ اللهِ ﷺ وَتُوُفِّيَ أَبُو بَكْرٍ ؓ فِي جُمَادَى الْآخِرَةِ سَنَةَ ثَلَاثَ عَشْرَةَ وَسِنُّهُ يَوْمَ تُوُفِّيَ «كَمَا ذَكَرَتْ عَائِشَةُ ؓ» سِنَّ رَسُولِ اللهِ ﷺ وَهُوَ ابْنُ ثَلَاثٍ وَسِتِّينَ