Narrated Alaqah ibn Sahar at-Tamimi: Alaqah came to the Messenger of Allah (ﷺ) and embraced Islam. He then came back from him and passed some people who had a lunatic fettered in chains. His people said: We are told that your companion has brought some good. Have you something with which you can cure him? I then recited Surat al-Fatihah and he was cured. They gave me one hundred sheep. I then came to the Messenger of Allah (ﷺ) and informed him of it. He asked: Is it only this? The narrator, Musaddad, said in his other version: Did you say anything other than this? I said: No. He said: Take it, for by my life, some accept if for a worthless chain, but you have done so for a genuine one.
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا يَحْيَى، عَنْ زَكَرِيَّا، قَالَ حَدَّثَنِي عَامِرٌ، عَنْ خَارِجَةَ بْنِ الصَّلْتِ التَّمِيمِيِّ، عَنْ عَمِّهِ، أَنَّهُ أَتَى رَسُولَ اللَّهِ صلى الله عليه وسلم فَأَسْلَمَ ثُمَّ أَقْبَلَ رَاجِعًا مِنْ عِنْدِهِ فَمَرَّ عَلَى قَوْمٍ عِنْدَهُمْ رَجُلٌ مَجْنُونٌ مُوثَقٌ بِالْحَدِيدِ فَقَالَ أَهْلُهُ إِنَّا حُدِّثْنَا أَنَّ صَاحِبَكُمْ هَذَا قَدْ جَاءَ بِخَيْرٍ فَهَلْ عِنْدَكَ شَىْءٌ تُدَاوِيهِ فَرَقَيْتُهُ بِفَاتِحَةِ الْكِتَابِ فَبَرَأَ فَأَعْطُونِي مِائَةَ شَاةٍ فَأَتَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم فَأَخْبَرْتُهُ فَقَالَ " هَلْ إِلاَّ هَذَا " . وَقَالَ مُسَدَّدٌ فِي مَوْضِعٍ آخَرَ " هَلْ قُلْتَ غَيْرَ هَذَا " . قُلْتُ لاَ . قَالَ " خُذْهَا فَلَعَمْرِي لَمَنْ أَكَلَ بِرُقْيَةِ بَاطِلٍ لَقَدْ أَكَلْتَ بِرُقْيَةِ حَقٍّ " .
sunnah.com