رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 1766
The Book of the Prohibited actions
Prohibition of Sitting on the Graves
عَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّه عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّه عَلَيْهِ وَسَلَّمَ : لأَنْ يَجْلِسَ أَحَدُكُمْ عَلَى جَمْرَةٍ، فَتُحْرِقَ ثِيَابَهُ، فَتَخْلُصَ على جِلْدِهِ خَيْرٌ لَهُ مِنْ أَنْ يجلس على قبر ((رَوَاهُ مُسلم))
Abu Hurairah (May Allah be pleased with him) said: The Messenger of Allah (ﷺ) said, "It is much better for one of you to sit on a live coal, which will burn his clothes and get to his skin than to sit on a grave." [Muslim].
Riyad as-Salihin, 1766