Sunan an-Nasa'i #2030 · The Book of Funerals

Sunan an-Nasa'iThumamah bin Shufa narrated
Sunan an-Nasa'i · Book 21 · The Book of Funerals
Sunan an-Nasa'i · كتاب 21 · كتاب الجنائز
"We were with Fadalah bin 'Ubaid in the land of the Romans, and a companion of ours died. Fadalah ordered that his grave be made level, then he said: 'I heard the Messenger of Allah commanding that it be made level
أَخْبَرَنَا سُلَيْمَانُ بْنُ دَاوُدَ، قَالَ أَنْبَأَنَا ابْنُ وَهْبٍ، قَالَ أَخْبَرَنِي عَمْرُو بْنُ الْحَارِثِ، أَنَّ ثُمَامَةَ بْنَ شُفَىٍّ، حَدَّثَهُ قَالَ ‏
‏ كُنَّا مَعَ فَضَالَةَ بْنِ عُبَيْدٍ بِأَرْضِ الرُّومِ فَتُوُفِّيَ صَاحِبٌ لَنَا، فَأَمَرَ فَضَالَةُ بِقَبْرِهِ فَسُوِّيَ، ثُمَّ قَالَ ‏:‏ سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَأْمُرُ بِتَسْوِيَتِهَا ‏.‏
Reference : Sunan an-Nasa'i 2030In-book reference : Book 21, Hadith 213