Hadith 21:115
Sahih (Al-Albani)
Narrated Abu Hurairah:
A negress (or a youth) used to sweep the mosque. The Prophet (ﷺ) missed him, and when he asked about him the people told him that he had died. He said: Why have you not informed me ? He said: Lead me to his grave. So they led him and he prayed over him.
حَدَّثَنَا سُلَيْمَانُ بْنُ حَرْبٍ، وَمُسَدَّدٌ، قَالاَ حَدَّثَنَا حَمَّادٌ، عَنْ ثَابِتٍ، عَنْ أَبِي رَافِعٍ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ امْرَأَةً، سَوْدَاءَ أَوْ رَجُلاً كَانَ يَقُمُّ الْمَسْجِدَ فَفَقَدَهُ النَّبِيُّ صلى الله عليه وسلم فَسَأَلَ عَنْهُ فَقِيلَ مَاتَ . فَقَالَ " أَلاَّ آذَنْتُمُونِي بِهِ " . قَالَ " دُلُّونِي عَلَى قَبْرِهِ " . فَدَلُّوهُ فَصَلَّى عَلَيْهِ
Original Reference: Sunan Abi Dawud 3203