Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
tabarani:15963 – Abū Khalīfah al-Faḍl b. al-Ḥubāb al-Jumaḥī > ʿAbdullāh b. ʿAbd al-Wahhāb al-Jumaḥī > Khālid b. al-Ḥārith > ʿAbd al-Ḥamīd b. Jaʿfar > Abū Ibrāhīm al-Siyāʾī > Abū Ṣāliḥ ʿAlī al-Hamdānī > Faḍālah b. ʿUbayd

[Machine] The Messenger of Allah ﷺ said, "Level the graves upon the surface of the ground when you bury them."  

الطبراني:١٥٩٦٣ – حَدَّثَنَا أَبُو خَلِيفَةَ الْفَضْلُ بْنُ الْحُبَابِ الْجُمَحِيُّ ثنا عَبْدُ اللهِ بْنُ عَبْدِ الْوَهَّابِ الْجُمَحِيُّ ثنا خَالِدُ بْنُ الْحَارِثِ ثنا عَبْدُ الْحَمِيدِ بْنُ جَعْفَرٍ أَخْبَرَنِي أَبُو إِبْرَاهِيمَ السِّيَائِيُّ عَنْ أَبِي صَالِحٍ عَلِيٍّ الْهَمْدَانِيِّ عَنْ فَضَالَةَ بْنِ عُبَيْدٍ قَالَ

قَالَ رَسُولُ اللهِ ﷺ «سَوُّوا الْقُبُورَ عَلَى وَجْهِ الْأَرْضِ إِذَا دَفَنْتُمْ»  

See similar narrations below:

Collected by Suyūṭī