It was narrated from 'Abdullah bin Abi Qatadah, from his father, that the Messenger of Allah (ﷺ said: "When any one of you urinates, let him not hold his penis in his right hand."
It was narrated from 'Abdullah bin Abi Qatadah that his father said: "The Messenger of Allah (ﷺ) said: 'When any one of you enters Al-Khala' (the toilet), let him not touch his penis with his right hand.'"