Hadith 1:87
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 َ (92)
Original Reference: Bulugh al-Maram 73