Sunan Abi Dawud 4586
سنن أبي داود#4586Hasanحَدَّثَنَا نَصْرُ بْنُ عَاصِمٍ الأَنْطَاكِيُّ، وَمُحَمَّدُ بْنُ الصَّبَّاحِ بْنِ سُفْيَانَ، أَنَّ الْوَلِيدَ بْنَ مُسْلِمٍ، أَخْبَرَهُمْ عَنِ ابْنِ جُرَيْجٍ، عَنْ عَمْرِو بْنِ شُعَيْبٍ، عَنْ أَبِيهِ، عَنْ جَدِّهِ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " مَنْ تَطَبَّبَ وَلاَ يُعْلَمُ مِنْهُ طِبٌّ فَهُوَ ضَامِنٌ " . قَالَ نَصْرٌ قَالَ حَدَّثَنِي ابْنُ جُرَيْجٍ . قَالَ أَبُو دَاوُدَ هَذَا لَمْ يَرْوِهِ إِلاَّ الْوَلِيدُ لاَ نَدْرِي هُوَ صَحِيحٌ أَمْ لاَ .
Narrated 'Amr b. Suh'aib: On his father's authority, said that his grandfather reported the Messenger of Allah (ﷺ) said: Anyone who practises medicine when he is not known as a practitioner will be held responsible. Abu Dawud said: This has been transmitted by al-Walid alone. We do not know whether it is sound or not
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:
In-book reference: 41:93