Narrated Alaqah ibn Sahar at-Tamimi:

We proceeded from the Messenger of Allah ﷺ and came to a clan of the Arabs.

They said: We have been told that you have brought what is good from this man. Have you any medicine or a charm, for we have a lunatic in chains?

We said: Yes. Then they brought a lunatic in chains. He said: I recited Surat al-Fatihah over him for three days, morning and evening. Whenever I finished it, I would collect my saliva and spit it out, and he seemed as if he were set free from a bond. He said: They gave me some payment, but I said: No, not until I ask the Messenger of Allah ﷺ.

He (the Prophet) said: Accept it, for, by my life, some accept it for a worthless charm, but you have done so for a genuine one.

حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ مُعَاذٍ، حَدَّثَنَا أَبِي ح، وَحَدَّثَنَا ابْنُ بَشَّارٍ، حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ، قَالَ حَدَّثَنَا شُعْبَةُ، عَنْ عَبْدِ اللَّهِ بْنِ أَبِي السَّفَرِ، عَنِ الشَّعْبِيِّ، عَنْ خَارِجَةَ بْنِ الصَّلْتِ التَّمِيمِيِّ، عَنْ عَمِّهِ، قَالَ أَقْبَلْنَا مِنْ عِنْدِ رَسُولِ اللَّهِ ﷺ فَأَتَيْنَا عَلَى حَىٍّ مِنَ الْعَرَبِ فَقَالُوا إِنَّا أُنْبِئْنَا أَنَّكُمْ جِئْتُمْ مِنْ عِنْدِ هَذَا الرَّجُلِ بِخَيْرٍ فَهَلْ عِنْدَكُمْ مِنْ دَوَاءٍ أَوْ رُقْيَةٍ فَإِنَّ عِنْدَنَا مَعْتُوهًا فِي الْقُيُودِ قَالَ فَقُلْنَا نَعَمْ . قَالَ فَجَاءُوا بِمَعْتُوهٍ فِي الْقُيُودِ - قَالَ - فَقَرَأْتُ عَلَيْهِ فَاتِحَةَ الْكِتَابِ ثَلاَثَةَ أَيَّامٍ غُدْوَةً وَعَشِيَّةً كُلَّمَا خَتَمْتُهَا أَجْمَعُ بُزَاقِي ثُمَّ أَتْفُلُ فَكَأَنَّمَا نُشِطَ مِنْ عِقَالٍ قَالَ فَأَعْطَوْنِي جُعْلاً فَقُلْتُ لاَ حَتَّى أَسْأَلَ رَسُولَ اللَّهِ ﷺ فَقَالَ " كُلْ فَلَعَمْرِي مَنْ أَكَلَ بِرُقْيَةِ بَاطِلٍ لَقَدْ أَكَلْتَ بِرُقْيَةِ حَقٍّ " .