Full Sharh — Mishkat al-Masabih 128
عَن جَابر بن عبد الله قَالَ خَرَجْنَا مَعَ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِلَى سَعْدِ بْنِ مُعَاذٍ حِينَ توفّي قَالَ فَلَمَّا صَلَّى عَلَيْهِ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ وَوُضِعَ فِي قَبْرِهِ وَسُوِّيَ عَلَيْهِ سَبَّحَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَسَبَّحْنَا طَوِيلًا ثُمَّ كَبَّرَ فَكَبَّرْنَا فَقِيلَ يَا رَسُولَ اللَّهِ لِمَ سَبَّحَتْ ثُمَّ كَبَّرْتَ قَالَ: «لقد تضايق على هَذَا العَبْد الصَّالح قَبره حَتَّى فرجه الله عز وَجل عَنهُ» . رَوَاهُ أَحْمد
English Translation
Jabir said:: We went out with God’s messenger to Sa'd b. Mu'adh when he died. God’s messenger prayed over him, and when he was placed in his grave and the ground was levelled over him, God’s messenger extolled God and we did so also at great length. He then said, “God is most great," and we did the same. Someone asked him why he had extolled God and then said, “God is most great," to which he replied, “This upright servant’s grave had closed in on him, but finally God removed the pressure from him." Ahmad transmitted it.
Source
Mishkat al-Masabih(مشكاة المصابيح)
Faith
Hadith Number
128