Hadith 4523
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 .)