Sunan Ibn Majah 484
سنن ابن ماجه#484Da'ifحَدَّثَنَا 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 ـ صلى الله عليه وسلم ـ عَنْ مَسِّ الذَّكَرِ فَقَالَ " إِنَّمَا هُوَ حذية مِنْكَ " .
It was narrated that Abu Umamah said:"The Messenger of Allah was asked about touching the penis and he said: 'Rather it is a piece of you (your body)
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Al-AlbaniVery Daif
Muhammad Fouad Abd al-BaqiVery Daif
Shuaib Al ArnautVery Daif
Zubair Ali ZaiDaif
In-book reference: 1:218