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 ‏.‏

Narrated 'Aishah: "The Messenger of Allah (PBUH) 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 (PBUH) said: 'What has brought you?' Sa'd said: 'Fear for the Messenger of Allah (PBUH) came upon me, so I came to protect him.' So the Messenger of Allah (PBUH) supplicated for him, then slept." Translation Not Available

Book Ref: Jamiya Tirmidhi Book 49 Hadith 3756
Web Ref:  Jamiya Tirmidhi Vol 1 Book 46 Hadith 3756