Musannaf Ibn Abi Shayba 1:1649

Abu Bakr narrated to us, he said: Hafs [ibn] Ghiyath narrated to us, from Dawud, from al-Sha'bi, from Alqama, who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "Do not perform istinja (cleaning oneself after defecation) with bones nor with dung, for they are the provisions of your brothers among the jinn."