Regarding The Earnings Of Physicians Sunan Abi Dawud 3418

Arabic hadith text
حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا أَبُو عَوَانَةَ، عَنْ أَبِي بِشْرٍ، عَنْ أَبِي الْمُتَوَكِّلِ، عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ، أَنَّ رَهْطًا، مِنْ أَصْحَابِ رَسُولِ اللَّهِ صلى الله عليه وسلم انْطَلَقُوا فِي سَفْرَةٍ سَافَرُوهَا فَنَزَلُوا بِحَىٍّ مِنْ أَحْيَاءِ الْعَرَبِ فَاسْتَضَافُوهُمْ فَأَبَوْا أَنْ يُضَيِّفُوهُمْ - قَالَ - فَلُدِغَ سَيِّدُ ذَلِكَ الْحَىِّ فَشَفَوْا لَهُ بِكُلِّ شَىْءٍ لاَ يَنْفَعُهُ شَىْءٌ ‏.‏ فَقَالَ بَعْضُهُمْ لَوْ أَتَيْتُمْ هَؤُلاَءِ الرَّهْطَ الَّذِينَ نَزَلُوا بِكُمْ لَعَلَّ أَنْ يَكُونَ عِنْدَ بَعْضِهِمْ شَىْءٌ يَنْفَعُ صَاحِبَكُمْ فَقَالَ بَعْضُهُمْ إِنَّ سَيِّدَنَا لُدِغَ فَشَفَيْنَا لَهُ بِكُلِّ شَىْءٍ فَلاَ يَنْفَعُهُ شَىْءٌ فَهَلْ عِنْدَ أَحَدٍ مِنْكُمْ شَىْءٌ يَشْفِي صَاحِبَنَا يَعْنِي رُقْيَةً ‏.‏ فَقَالَ رَجُلٌ مِنَ الْقَوْمِ إِنِّي لأَرْقِي وَلَكِنِ اسْتَضَفْنَاكُمْ فَأَبَيْتُمْ أَنْ تُضَيِّفُونَا مَا أَنَا بِرَاقٍ حَتَّى تَجْعَلُوا لِي جُعْلاً ‏.‏ فَجَعَلُوا لَهُ قَطِيعًا مِنَ الشَّاءِ فَأَتَاهُ فَقَرَأَ عَلَيْهِ بِأُمِّ الْكِتَابِ وَيَتْفُلُ حَتَّى بَرِئَ كَأَنَّمَا أُنْشِطَ مِنْ عِقَالٍ فَأَوْفَاهُمْ جُعْلَهُمُ الَّذِي صَالَحُوهُ عَلَيْهِ ‏.‏ فَقَالُوا اقْتَسِمُوا فَقَالَ الَّذِي رَقَى لاَ تَفْعَلُوا حَتَّى نَأْتِيَ رَسُولَ اللَّهِ صلى الله عليه وسلم فَنَسْتَأْمِرَهُ ‏.‏ فَغَدَوْا عَلَى رَسُولِ اللَّهِ صلى الله عليه وسلم فَذَكَرُوا لَهُ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏مِنْ أَيْنَ عَلِمْتُمْ أَنَّهَا رُقْيَةٌ أَحْسَنْتُمْ وَاضْرِبُوا لِي مَعَكُمْ بِسَهْمٍ ‏"‏ ‏.‏
Translation
Narrated Abu Sa’id Al Khudri

Some of the Companions of the Messenger of Allah (ﷺ) set out on a journey they undertook, until they encamped at a tribe among the Arab tribes. They asked them for hospitality, but they refused to host them. The chief of that tribe was stung, and they treated him with everything, but nothing benefited him. Some of them said to others: 'If only you went to those people who encamped near you; perhaps some of them might have something that could benefit your companion.' Some of them went and said: 'Our chief has been stung, and we have treated him with everything, but nothing benefits him. Does any of you have anything that can heal our companion?' Meaning, a ruqyah (incantation). A man from the group said: 'Yes, by Allah, I can perform ruqyah, but we asked you for hospitality and you refused to host us. I will not perform ruqyah for you until you give us a reward.' They agreed upon a flock of sheep for him. He went to him, recited the Opening of the Book (Surat al-Fatihah), and spat until he recovered as if he were released from a tether. They paid him the reward they had agreed upon. They said: 'Divide them.' The one who had performed the ruqyah said: 'Do not do so until we go to the Messenger of Allah (ﷺ) and ask him.' They went in the morning to the Messenger of Allah (ﷺ) and mentioned it to him. The Messenger of Allah (ﷺ) said: 'How did you know that it is a ruqyah? You have done right. Assign a share for me along with you.'