مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 319
Purification
Circumstances which make ablution necessary - Section 2
وَعَن بسرة قَالَتْ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «إِذَا مَسَّ أَحَدُكُمْ ذَكَرَهُ فَلْيَتَوَضَّأْ» . رَوَاهُ مَالِكٌ وَأَحْمَدُ وَأَبُو دَاوُدَ وَالتِّرْمِذِيُّ وَالنَّسَائِيُّ وَابْنُ مَاجَه والدارمي
Busra daughter of Safwan b. Naufal reported God’s messenger as saying, “If any of you touches his penis he must perform ablution.” Malik, Ahmad, Abu Dawud, Tirmidhi, Nasa’i, Ibn Majah and Darimi transmitted it.
Mishkat al-Masabih, 319صَحِيح (الألباني)