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Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
ibnmajah:483 – ʿAlī b. Muḥammad > Wakīʿ > Muḥammad b. Jābir

"I heard the Messenger of Allah being asked about touching the penis. He said: 'That does not require ablution, because it is a part of you (your body).'"  

ابن ماجة:٤٨٣ – حَدَّثَنَا عَلِيُّ بْنُ مُحَمَّدٍ حَدَّثَنَا وَكِيعٌ حَدَّثَنَا مُحَمَّدُ بْنُ جَابِرٍ قَالَ سَمِعْتُ قَيْسَ بْنَ طَلْقٍ الْحَنَفِيَّ عَنْ أَبِيهِ قَالَ

سَمِعْتُ رَسُولَ اللَّهِ ﷺ سُئِلَ عَنْ مَسِّ الذَّكَرِ فَقَالَ لَيْسَ فِيهِ وُضُوءٌ إِنَّمَا هُوَ مِنْكَ  

See similar narrations below:

Collected by Ibn Mājah
ibnmajah:484 – ʿAmr b. ʿUthmān b. Saʿīd b. Kathīr b. Dīnār al-Ḥimṣī > Marwān b. Muʿāwiyah > Jaʿfar b. al-Zubayr > al-Qāsim > Abū Umāmah

"The Messenger of Allah was asked about touching the penis and he said: 'Rather it is a piece of you (your body).'"  

ابن ماجة:٤٨٤ – حَدَّثَنَا عَمْرُو بْنُ عُثْمَانَ بْنِ سَعِيدِ بْنِ كَثِيرِ بْنِ دِينَارٍ الْحِمْصِيُّ حَدَّثَنَا مَرْوَانُ بْنُ مُعَاوِيَةَ عَنْ جَعْفَرِ بْنِ الزُّبَيْرِ عَنِ الْقَاسِمِ عَنْ أَبِي أُمَامَةَ قَالَ

سُئِلَ رَسُولُ اللَّهِ ﷺ عَنْ مَسِّ الذَّكَرِ فَقَالَ إِنَّمَا هُوَ حذية مِنْكَ