It wasnarrated that Zuhri heard Anas bin Malik say:
"The last glancethatI had of the Messenger of Allah (ﷺ) was when he drew back thecurtain on Monday, and I saw his face as if it was a page of theMushaf (Qur'an), and the people were praying behind Abu Bakr. He(AbuBakr) wanted to move, but he (the Prophet (ﷺ)) gestured to himtostand firm. Then he let the curtain fall, and he died at the endofthat day."
English reference: Vol. 1, Book 6, Hadith 1624
Arabic reference: Book 6, Hadith 1692