Jami` at-Tirmidhi, Book 49, Hadith 4122 (In-Book) ⓘ

Narrated 'Aishah: "The Messenger of Allah did not sleep one night upon arriving in Al-Madinah. So he said: 'If only a righteous man would guard me tonight.'" She said: "So we were like that, when we heard the clanging of weapons. He said: 'Who is this?' So he said: 'Sa'd bin Abi Waqqas.' So the Messenger of Allah said: 'What has brought you?' Sa'd said: 'Fear for the Messenger of Allah came upon me, so I came to protect him.' So the Messenger of Allah supplicated for him, then slept."

حَدَّثَنَا قُتَيْبَةُ، حَدَّثَنَا اللَّيْثُ، عَنْ يَحْيَى بْنِ سَعِيدٍ، عَنْ عَبْدِ اللَّهِ بْنِ عَامِرِ بْنِ رَبِيعَةَ، أَنَّ عَائِشَةَ، قَالَتْ سَهِرَ رَسُولُ اللَّهِ صلى الله عليه وسلم مَقْدَمَهُ الْمَدِينَةَ لَيْلَةً قَالَ ‏"‏ لَيْتَ رَجُلاً صَالِحًا يَحْرُسُنِي اللَّيْلَةَ ‏"‏ ‏.‏ قَالَتْ فَبَيْنَا نَحْنُ كَذَلِكَ إِذْ سَمِعْنَا خَشْخَشَةَ السِّلاَحِ فَقَالَ ‏"‏ مَنْ هَذَا ‏"‏ ‏.‏ فَقَالَ سَعْدُ بْنُ أَبِي وَقَّاصٍ ‏.‏ فَقَالَ لَهُ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ مَا جَاءَ بِكَ ‏"‏ ‏.‏ فَقَالَ سَعْدٌ وَقَعَ فِي نَفْسِي خَوْفٌ عَلَى رَسُولِ اللَّهِ صلى الله عليه وسلم فَجِئْتُ أَحْرُسُهُ ‏.‏ فَدَعَا لَهُ رَسُولُ اللَّهِ صلى الله عليه وسلم ثُمَّ نَامَ ‏.‏ قَالَ هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ ‏.‏