حَدَّثَنَا سُوَيْدُ بْنُ سَعِيدٍ، حَدَّثَنَا عَبْدُ الْعَزِيزِ بْنُ أَبِي حَازِمٍ، عَنْ سُهَيْلٍ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ ‏"‏ لأَنْ يَجْلِسَ أَحَدُكُمْ عَلَى جَمْرَةٍ تُحْرِقُهُ خَيْرٌ لَهُ مِنْ أَنْ يَجْلِسَ عَلَى قَبْرٍ ‏"‏ ‏.‏

It wasnarrated from Abu Hurairah said: The Messenger of Allah (PBUH)said:“If one of you were to sit on a live coal that burns him, thatwould be better for him than if he were to sit on a grave.” Translation Not Available

Book Ref: Sunan Ibn Majah Book 6 Hadith 1566
Web Ref:  Sunan Ibn Majah Vol 1 Book 6 Hadith 1566