The Prophet ﷺ prohibited to urinate in a hole. Qatadah (a narrator) was asked about the reason for the disapproval of urinating in a hole. He replied: It is said that these (holes) are the habitats of the jinn.
أَنَّ رَسُولَ اللَّهِ ﷺ نَهَى أَنْ يُبَالَ فِي الْجُحْرِ قَالَ قَالُوا لِقَتَادَةَ مَا يُكْرَهُ مِنَ الْبَوْلِ فِي الْجُحْرِ قَالَ كَانَ يُقَالُ إِنَّهَا مَسَاكِنُ الْجِنِّ
"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."
أَنَّ نَبِيَّ اللَّهِ ﷺ قَالَ لاَ يَبُولَنَّ أَحَدُكُمْ فِي جُحْرٍ قَالُوا لِقَتَادَةَ وَمَا يُكْرَهُ مِنَ الْبَوْلِ فِي الْجُحْرِ قَالَ يُقَالُ إِنَّهَا مَسَاكِنُ الْجِنِّ
"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." (Using translation from Nasāʾī 34)
«لَا يَبُولَنَّ أَحَدُكُمْ فِي جُحْرٍ» قِيلَ لِقَتَادَةَ وَمَا يُكْرَهُ مِنَ الْبَوْلِ فِي الْجُحْرِ؟ قَالَ يُقَالُ إِنَّهَا مَسَاكِنُ الْجِنِّ