Narrated 'Aisha:

Abu Bakr came from his house at As-Sunh on a horse. He dismounted and entered the Mosque, but did not speak to the people till he entered upon 'Aisha and went straight to Allah's Apostle who was covered with Hibra cloth (i.e. a kind of Yemenite cloth). He then uncovered the Prophet's face and bowed over him and kissed him and wept, saying, "Let my father and mother be sacrificed for you. By Allah, Allah will never cause you to die twice. As for the death which was written for you, has come upon you." Narrated Ibn 'Abbas: Abu Bakr went out while Umar bin Al-Khattab was talking to the people. Abu Bakr said, "Sit down, O 'Umar!" But 'Umar refused to sit down. So the people came to Abu Bakr and left Umar. Abu Bakr said, "To proceed, if anyone amongst you used to worship Muhammad , then Muhammad is dead, but if (anyone of) you used to worship Allah, then Allah is Alive and shall never die. Allah said:--"Muhammad is no more than an Apostle, and indeed (many) apostles have passed away before him..(till the end of the Verse )......Allah will reward to those who are thankful." (3.144) By Allah, it was as if the people never knew that Allah had revealed this Verse before till Abu Bakr recited it and all the people received it from him, and I heard everybody reciting it (then). Narrated Az-Zuhri: Said bin Al-Musaiyab told me that 'Umar said, "By Allah, when I heard Abu Bakr reciting it, my legs could not support me and I fell down at the very moment of hearing him reciting it, declaring that the Prophet had died."

حَدَّثَنَا يَحْيَى بْنُ بُكَيْرٍ، حَدَّثَنَا اللَّيْثُ، عَنْ عُقَيْلٍ، عَنِ ابْنِ شِهَابٍ، قَالَ أَخْبَرَنِي أَبُو سَلَمَةَ، أَنَّ عَائِشَةَ، أَخْبَرَتْهُ أَنَّ أَبَا بَكْرٍ ـ رضى الله عنه ـ أَقْبَلَ عَلَى فَرَسٍ مِنْ مَسْكَنِهِ بِالسُّنْحِ حَتَّى نَزَلَ، فَدَخَلَ الْمَسْجِدَ فَلَمْ يُكَلِّمِ النَّاسَ حَتَّى دَخَلَ عَلَى عَائِشَةَ، فَتَيَمَّمَ رَسُولَ اللَّهِ ﷺ وَهْوَ مُغَشًّى بِثَوْبِ حِبَرَةٍ، فَكَشَفَ عَنْ وَجْهِهِ ثُمَّ أَكَبَّ عَلَيْهِ فَقَبَّلَهُ وَبَكَى. ثُمَّ قَالَ بِأَبِي أَنْتَ وَأُمِّي، وَاللَّهِ لاَ يَجْمَعُ اللَّهُ عَلَيْكَ مَوْتَتَيْنِ، أَمَّا الْمَوْتَةُ الَّتِي كُتِبَتْ عَلَيْكَ فَقَدْ مُتَّهَا. قَالَ الزُّهْرِيُّ وَحَدَّثَنِي أَبُو سَلَمَةَ، عَنْ عَبْدِ اللَّهِ بْنِ عَبَّاسٍ، أَنَّ أَبَا بَكْرٍ، خَرَجَ وَعُمَرُ يُكَلِّمُ النَّاسَ فَقَالَ اجْلِسْ يَا عُمَرُ، فَأَبَى عُمَرُ أَنْ يَجْلِسَ. فَأَقْبَلَ النَّاسُ إِلَيْهِ وَتَرَكُوا عُمَرَ، فَقَالَ أَبُو بَكْرٍ أَمَّا بَعْدُ مَنْ كَانَ مِنْكُمْ يَعْبُدُ مُحَمَّدًا ﷺ فَإِنَّ مُحَمَّدًا قَدْ مَاتَ، وَمَنْ كَانَ مِنْكُمْ يَعْبُدُ اللَّهَ فَإِنَّ اللَّهَ حَىٌّ لاَ يَمُوتُ، قَالَ اللَّهُ {وَمَا مُحَمَّدٌ إِلاَّ رَسُولٌ قَدْ خَلَتْ مِنْ قَبْلِهِ الرُّسُلُ} إِلَى قَوْلِهِ {الشَّاكِرِينَ} وَقَالَ وَاللَّهِ لَكَأَنَّ النَّاسَ لَمْ يَعْلَمُوا أَنَّ اللَّهَ أَنْزَلَ هَذِهِ الآيَةَ حَتَّى تَلاَهَا أَبُو بَكْرٍ، فَتَلَقَّاهَا مِنْهُ النَّاسُ كُلُّهُمْ فَمَا أَسْمَعُ بَشَرًا مِنَ النَّاسِ إِلاَّ يَتْلُوهَا. فَأَخْبَرَنِي سَعِيدُ بْنُ الْمُسَيَّبِ أَنَّ عُمَرَ قَالَ وَاللَّهِ مَا هُوَ إِلاَّ أَنْ سَمِعْتُ أَبَا بَكْرٍ تَلاَهَا فَعَقِرْتُ حَتَّى مَا تُقِلُّنِي رِجْلاَىَ، وَحَتَّى أَهْوَيْتُ إِلَى الأَرْضِ حِينَ سَمِعْتُهُ تَلاَهَا أَنَّ النَّبِيَّ ﷺ قَدْ مَاتَ.