Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) said: "Do not clean yourselves after relieving yourselves with dung or with bones, for they are the provision of your brothers among the jinn."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 9974