Sahih Muslim #7220 · The Book of Paradise, its Description, its Bounties and its Inhabitants

Sahih MuslimAl-Bara' b. 'Azib reported that this verse
Sahih Muslim · Book 53 · The Book of Paradise, its Description, its Bounties and its Inhabitants
Sahih Muslim · كتاب 53 · كتاب الجنة وصفة نعيمها وأهلها
"Allah keeps those who believe steadfast with firm word in this world and the Hereafter" was revealed in connection with the torment of the grave.
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، وَمُحَمَّدُ بْنُ الْمُثَنَّى، وَأَبُو بَكْرِ بْنُ نَافِعٍ قَالُوا حَدَّثَنَا عَبْدُ الرَّحْمَنِ، - يَعْنُونَ ابْنَ مَهْدِيٍّ - عَنْ سُفْيَانَ، عَنْ أَبِيهِ، عَنْ خَيْثَمَةَ، عَنِ الْبَرَاءِ بْنِ عَازِبٍ، ‏{‏ يُثَبِّتُ اللَّهُ الَّذِينَ آمَنُوا بِالْقَوْلِ الثَّابِتِ فِي الْحَيَاةِ الدُّنْيَا وَفِي الآخِرَةِ‏}‏ قَالَ نَزَلَتْ فِي عَذَابِ الْقَبْرِ ‏.‏
Reference : Sahih Muslim 7220In-book reference : Book 53, Hadith 89