" لاَ يَبُولَنَّ أَحَدُكُمْ فِي جُحْرٍ " . قَالُوا لِقَتَادَةَ وَمَا يُكْرَهُ مِنَ الْبَوْلِ فِي الْجُحْرِ قَالَ يُقَالُ إِنَّهَا مَسَاكِنُ الْجِنِّ
It was narrated from Qatadah, from 'Abdullah bin Sarjis, that the Prophet of Allah (ﷺ) said: "None of you should urinate into a burrow in the ground." They said to Qatadah: "Why is it disliked to urinate into a burrow in the ground?" He said: "It is said that these are dwelling-places of the jinn."