Sunan Ibn Majah The Book of Purification and its Sunnah Abdullah bin al-'Ala' عبد الله بن العلاء بن زبر al-Walid bin Muslim al-Quraishi الوليد بن مسلم القرشي Arbad bin Sariyya al-Salmi Yahya bin Abi al-Mta' يحيى بن أبي المطاع القرشي الأردني “My father told me that he heard the Messenger of Allah say: ‘When anyone of you urinates, let him not touch his penis with his right hand nor clean himself with his right hand.'” Another chain with similar wording. https://parallelquran.com/hadith/sunan-ibn-majah-44/