A deputation of the jinn came to the Prophet ﷺ and said: O Muhammad, forbid your community to cleans themselves with a bone or dung or charcoal, for in them Allah has provided sustenance for us. So the Prophet ﷺ forbade them to do so.
قَدِمَ وَفْدُ الْجِنِّ عَلَى رَسُولِ اللَّهِ ﷺ فَقَالُوا يَا مُحَمَّدُ انْهَ أُمَّتَكَ أَنْ يَسْتَنْجُوا بِعَظْمٍ أَوْ رَوْثَةٍ أَوْ حُمَمَةٍ فَإِنَّ اللَّهَ تَعَالَى جَعَلَ لَنَا فِيهَا رِزْقًا قَالَ فَنَهَى النَّبِيُّ ﷺ عَنْ ذَلِكَ