Mishkat al-Masabih 23 Medicine and Spells كتاب الطب والرقى 10

وَعَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لَا تُعَذِّبُوا صِبْيَانَكُمْ بِالْغَمْزِ مِنَ الْعُذْرَةِ عَلَيْكُمْ بِالْقُسْطِ»

He reported God’s messenger as saying: “Do not afflict your children by squeezing for a swelling in the uvula, but apply costus.” (Bukhari and Muslim .)