Sunan Ibn Majah, Volume 4, Book 31, Hadith 3489 (DarusSalam) ⓘ
It was narrated from ‘Aqqar bin Al-Mughirah from his father that the Prophet said: “Whoever seeks treatment by cauterization, or with Ruqyah, then he had absolved himself of reliance upon Allah.”
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا إِسْمَاعِيلُ ابْنُ عُلَيَّةَ، عَنْ لَيْثٍ، عَنْ مُجَاهِدٍ، عَنْ عَقَّارِ بْنِ الْمُغِيرَةِ، عَنْ أَبِيهِ، عَنِ النَّبِيِّ ـ صلى الله عليه وسلم ـ قَالَ " مَنِ اكْتَوَى أَوِ اسْتَرْقَى فَقَدْ بَرِئَ مِنَ التَّوَكُّلِ " .
also referenced under: Hadith 3489 (Reference) & Book 31, Hadith 3618 (In-Book)