It wasnarrated that 'Aishah said:
"When the Messenger of Allah (ﷺ)passed away, Abu Bakr was with his wife, the daughter of Kharijah, invillages surrounding Al-Madinah. They started to say: 'The Prophet(ﷺ) has not died, rather he has been overcome with what used toovercome him at the time of Revelation.' Then Abu Bakr came anduncovered his (the Prophet's (ﷺ)) face, kissed him between theeyesand said: 'You are too noble before Allah for Him to cause youto dietwice. By Allah, the Messenger of Allah (ﷺ) has indeeddied.' 'Umarwas in a corner of the mosque saying: 'By Allah,the Messenger ofAllah (ﷺ) has not died and he will never die untilthe hands andfeet of most of the hypocrites are cut off.' Then AbuBakr stood up,ascended the pulpit and said: 'Whoever used toworship Allah, Allah isalive and will never die. Whoever used toworship Muhammad, Muhammadis dead. "Muhammad is no more than aMessenger, and indeed (many)Messengers have passed away before him.If he dies or is killed, willyou then turn back on your heels (asdisbelievers)? And he who turnsback on his heels, not the least harmwill he do to Allah; and Allahwill give reward to those who aregrateful.'" [3:144] 'Umar said: 'Itwas as if I had neverread (that Verse) before that day.'"
English reference: Vol. 1, Book 6, Hadith 1627
Arabic reference: Book 6, Hadith 1695