Warning against sitting on graves

The Messenger of Allah ﷺ said: "It is better for one of you to sit on a live coal that burns his clothes and reaches his skin than to sit on a grave."

قَالَ رَسُولُ اللَّهِ ﷺ: «لَأَنْ يَجْلِسَ أَحَدُكُمْ عَلَى جَمْرَةٍ، فَتُحْرِقَ ثِيَابَهُ، فَتَخْلُصَ إِلَى جِلْدِهِ، خَيْرٌ لَهُ مِنْ أَنْ يَجْلِسَ عَلَى قَبْرٍ»