Dhakwan Abu Salah al-Saman al-Ziyat ذكوان أبو صالح السمان الزيات · The Book of Purification

"I am like a father teaching you. When any one of you goes to Al-Khala' (the toilet), let him not face toward the Qiblah nor turn his back toward it, and let him not clean himself with his right hand." And he used to tell them to use three stones, and he forbade using dung or old bones.

"The Messenger of Allah (ﷺ) said: 'If a dog licks the vessel of any one of you, let him throw (the contents) away and wash it seven times.'" Abu 'Abdur-Rahman (An-Nasa'i) said: I do not know any one who followed 'Ali bin Mushir in narrating it with: "Let him throw it away."