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abudawud:4586Naṣr b. ʿĀṣim al-Anṭākī And Muḥammad b. al-Ṣabbāḥ b. Sufyān > al-Walīd b. Muslim > Ibn Jurayj > ʿAmr b. Shuʿayb from his father from his grandfather

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.  

أبو داود:٤٥٨٦حَدَّثَنَا 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 ﷺ 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