Abu Hurairah reported,

He used to carry a water vessel for the Prophet ﷺ for his ablution and relieving himself. While he was following him with it, the Prophet ﷺ asked, "Who is this?"He replied, "I am Hurayrah."The Prophet ﷺ said, "Find me some stones I can use to clean myself, but do not bring me a bone or dung."So I brought him stones, carrying them in the edge of my garment, and placed them beside him, then I withdrew. When he had finished, I walked with him and asked, "What is the matter with bones and dung?"He answered, "They are food for the jinn. A delegation of the jinn of Nasibin came to me, and what excellent jinn they are, and they asked me for provisions. So I prayed to Allah for them that they would not pass by a bone or a piece of dung without finding food on it."

عن أبي هريرة

أنه كان يحمل مع النبي ﷺ إداوة لوضوئه وحاجته فبينما هو يتبعه بها فقال: من هذا؟ فقال: أنا هريرة. فقال: أبغني أحجارا أستنفض بها، ولا تأتني بعظم ولا بروثة. فأتيته بأحجار أحملها في طرف ثوبي حتى وضعت إلى جنبه ثم انصرفت حتى إذا فرغ مشيت معه فقلت: ما بال العظم والروثة؟ قال: هما من طعام الجن، وإنه أتاني وفد جن نصيبين- ونعم الجن- فسألوني الزاد، فدعوت الله لهم أن لا يمروا بعظم ولا بروثة إلا وجدوا عليها طعاما.