Narrated Busra bint Safwan (rad):

Allah’s Messenger (ﷺ) said: “He who touches his penis should perform ablution”. [Reported by Al-Khamsa, and At-Tirmidhi and Ibn Hibban graded it Sahih (sound).

وَعَنْ بُسْرَةَ بِنْتِ صَفْوَانَ رَضِيَ اَللَّهُ عَنْهَا; { أَنَّ رَسُولَ اَللَّهِ ‏- صلى الله عليه وسلم ‏-قَالَ:

مَنْ مَسَّ ذَكَرَهُ فَلْيَتَوَضَّأْ

} أَخْرَجَهُ اَلْخَمْسَةُ, وَصَحَّحَهُ اَلتِّرْمِذِيُّ, وَابْنُ حِبَّان َ [1]‏ .‏