Sahih Muslim , Hadith 1913 ⓘ
It has been narrated on the authority of Salman who said: I heard the Messenger of Allah say: Keeping watch for a day and a night is better (in point of reward) than fasting for a whole month and standing in prayer every night. If a person dies (while, performing this duty), his (meritorious) activity will continue and he will go on receiving his reward for it perpetually and will be saved from the torture of the grave.
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ عَبْدِ الرَّحْمَنِ بْنِ بَهْرَامَ الدَّارِمِيُّ، حَدَّثَنَا أَبُو الْوَلِيدِ الطَّيَالِسِيُّ، حَدَّثَنَا لَيْثٌ، - يَعْنِي ابْنَ سَعْدٍ - عَنْ أَيُّوبَ بْنِ مُوسَى، عَنْ مَكْحُولٍ، عَنْ شُرَحْبِيلَ بْنِ السَّمِطِ، عَنْ سَلْمَانَ، قَالَ سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ " رِبَاطُ يَوْمٍ وَلَيْلَةٍ خَيْرٌ مِنْ صِيَامِ شَهْرٍ وَقِيَامِهِ وَإِنْ مَاتَ جَرَى عَلَيْهِ عَمَلُهُ الَّذِي كَانَ يَعْمَلُهُ وَأُجْرِيَ عَلَيْهِ رِزْقُهُ وَأَمِنَ الْفَتَّانَ " .
also referenced under: Book 33, Hadith 233 (In-Book) & Book 20, Hadith 4703 (USC-MSA)
This tradition has been handed down on the authority of Salman al-Khair through another chain of transmitters.
حَدَّثَنِي أَبُو الطَّاهِرِ، أَخْبَرَنَا ابْنُ وَهْبٍ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ شُرَيْحٍ، عَنْ عَبْدِ الْكَرِيمِ، بْنِ الْحَارِثِ عَنْ أَبِي عُبَيْدَةَ بْنِ عُقْبَةَ، عَنْ شُرَحْبِيلَ بْنِ السَّمِطِ، عَنْ سَلْمَانَ الْخَيْرِ، عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم بِمَعْنَى حَدِيثِ اللَّيْثِ عَنْ أَيُّوبَ بْنِ مُوسَى .
also referenced under: Book 33, Hadith 234 (In-Book) & Book 20, Hadith 4704 (USC-MSA)