'Abdur-Rahman bin Al-Aswad (narrated) from his father that he heard 'Abdullah say:
"The Prophet (ﷺ) wanted to defecate, and he told me to bring him three stones. I found two stones and looked for a third, but I could not find any, so I picked up a piece of dung and brought them to the Prophet (ﷺ). He took the two stones and three away the dung and said: "This is Riks."Abu 'Abdur-Rahman (An-Nasai') said: Riks is the food of the jinn. (DE)
Arabic/English book reference (DE): Vol. 1, Book 1, Hadith 42 (DE)