Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
nasai-kubra:7005ʿAmr b. ʿUthmān And Muḥammad b. al-Muṣaffá > al-Walīd > Ibn Jurayj > ʿAmr b. Shuʿayb from his father from his grandfather

[Machine] The Messenger of Allah ﷺ said: "Whoever practices medicine without having prior knowledge of it, then he is responsible." 7006 Mahmoud ibn Khalid informed me, he said: Al-Walid narrated to us from Ibn Jurayj from Amr ibn Shuayb from his grandfather, similar to this (meaning).  

الكبرى للنسائي:٧٠٠٥أَخْبَرَنِي عَمْرُو بْنُ عُثْمَانَ وَمُحَمَّدُ بْنُ الْمُصَفَّى قَالَا حَدَّثَنَا الْوَلِيدُ عَنِ ابْنِ جُرَيْجٍ عَنْ عَمْرِو بْنِ شُعَيْبٍ عَنْ أَبِيهِ عَنْ جَدِّهِ قَالَ

قَالَ رَسُولُ اللهِ ﷺ «مَنْ تَطَبَّبَ وَلَمْ يُعْلَمْ مِنْهُ طِبٌّ قَبْلَ ذَلِكَ فَهُوَ ضَامِنٌ» 7006 أَخْبَرَنِي مَحْمُودُ بْنُ خَالِدٍ قَالَ حَدَّثَنَا الْوَلِيدُ عَنِ ابْنِ جُرَيْجٍ عَنْ عَمْرِو بْنِ شُعَيْبٍ عَنْ جَدِّهِ مِثْلَهُ سَوَاءً