Abdullah bin Abbas reported,

When the Messenger of Allah ﷺ fell ill with the illness in which he died, he was in Ayesha's house. He said, "Call Ali for me."Ayesha said, "Shall we call Abu Bakr for you?"He said, "Call him."Hafsa said, "Messenger of Allah, shall we call Umar for you?"He said, "Call him."Umm Fadl said, "Messenger of Allah, shall we call Abbas for you?"He said, "Call him."When they had gathered, he raised his head and did not see Ali, so he remained silent. Umar said, "Leave the Messenger of Allah ﷺ."Then Bilal came to inform him that it was time for prayer, and he said, "Tell Abu Bakr to lead the people in prayer."Ayesha said, "Abu Bakr is a soft-hearted man, and whenever the people cannot see you they weep. If only you would order Umar to lead the people in prayer."So Abu Bakr went out and led the people in prayer. Then the Prophet ﷺ felt some relief, so he went out supported between two men, his feet dragging along the ground. When the people saw him, they glorified Allah to alert Abu Bakr, who began to step back, but the Prophet ﷺ gestured to him to stay in his place. The Prophet ﷺ came and sat down, and Abu Bakr stood at his right side. Abu Bakr was following the Prophet ﷺ in prayer, and the people were following Abu Bakr.Ibn Abbas said, "The Prophet ﷺ took up the recitation from where Abu Bakr had reached, and he died during that illness." Waki once said, "Abu Bakr was following the Prophet ﷺ in prayer, and the people were following Abu Bakr."

حدثنا وكيع حدثنا إسرائيل عن أبي إسحاق عن أرقم بن شرحبيل

عن ابن عباس قال

لما مرض رسول الله ﷺ مرضه الذي مات فيه كان في بيت عائشة فقال ادعوا لي عليا قالت عائشة ندعو لك أبا بكر قال ادعوه قالت حفصة يا رسول الله ندعو لك عمر قال ادعوه قالت أم الفضل يا رسول الله ندعو لك العباس قال ادعوه فلما اجتمعوا رفع رأسه فلم ير عليا فسكت فقال عمر قوموا عن رسول الله ﷺ فجاء بلال يؤذنه بالصلاة فقال مروا أبا بكر يصلي بالناس فقالت عائشة إن أبا بكر رجل حصر ومتى ما لا يراك الناس يبكون فلو أمرت عمر يصلي بالناس فخرج أبو بكر فصلى بالناس ووجد النبي ﷺ من نفسه خفة فخرج يهادى بين رجلين ورجلاه تخطان في الأرض فلما رآه الناس سبحوا أبا بكر فذهب يتأخر فأومأ إليه أي مكانك فجاء النبي ﷺ حتى جلس قال وقام أبو بكر عن يمينه وكان أبو بكر يأتم بالنبي ﷺ والناس يأتمون بأبي بكر قال ابن عباس وأخذ النبي ﷺ من القراءة من حيث بلغ أبو بكر ومات في مرضه ذاك عليه السلام وقال وكيع مرة فكان أبو بكر يأتم بالنبي ﷺ والناس يأتمون بأبي بكر