"The Messenger of Allah said: 'When anyone of you urinates, let him squeeze his penis three times (to remove the remaining urine drops)." (Da'if) Another chain with similar wording.  

قَالَ رَسُولُ اللَّهِ ﷺ إِذَا بَالَ أَحَدُكُمْ فَلْيَنْتُرْ ذَكَرَهُ ثَلاَثَ مَرَّاتٍ قَالَ أَبُو الْحَسَنِ بْنُ سَلَمَةَ حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ الْعَزِيزِ حَدَّثَنَا أَبُو نُعَيْمٍ حَدَّثَنَا زَمْعَةُ فَذَكَرَ نَحْوَهُ