Mishkat al-Masabih 23 Medicine and Spells كتاب الطب والرقى 13

وَعَن أنسٍ قَالَ: رَخَّصَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فِي الرُّقْيَةِ مِنَ الْعَيْنِ وَالْحُمَّةِ وَالنَّمْلَةِ. رَوَاهُ مُسلم

Anas said God’s messenger gave permission to use an invocation for the evil eye, scorpion sting and small pustules. Muslim transmitted it.