حَدَّثَنَا أَسْوَدُ بْنُ عَامِرٍ حَدَّثَنَا شُعْبَةُ قَالَ الْحَكَمُ أَخْبَرَنِي عَنْ أَبِي مُحَمَّدٍ عَنْ عَلِيٍّ رَضِيَ اللَّهُ عَنْهُ قَالَ بَعَثَهُ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِلَى الْمَدِينَةِ فَأَمَرَهُ أَنْ يُسَوِّيَ الْقُبُورَ
مسند امام احمد بن حنبل · Hadith 881
It was narrated that 'Ali (RA) said that the Prophet (PBUH) sent him to Madinah and told him to level the graves.
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020