Muhammad bin Ajlan narrates with the same chain, except that he did not mention the words "I teach you". He said: "When one of you goes to relieve himself or urinate, he should neither face the qiblah nor turn his back to it, and he should clean himself with three stones." And he (peace and blessings be upon him) forbade (cleaning oneself with) dung and decayed bone.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 433