[Machine] The Messenger of Allah ﷺ said, "When you make istinja, perform it thoroughly, unless you are fasting, and do not hit your private parts with your right hand as you hit your slaves."  

قَالَ رَسُولُ اللَّهِ ﷺ «إِذَا اسْتَنْشَقْتَ فَبَالِغْ إِلَّا أَنْ تَكُونَ صَائِمًا وَلَا تَضْرِبْ ظَعِينَتَكَ كَمَا تَضْرِبُ أَمَتَكَ»