It is narrated from Nafi' (may Allah have mercy on him) that Sayyiduna Ibn Umar (may Allah be pleased with them both) used to beat his son for reciting incorrectly.
Hadith Referenceالادب المفرد / كتاب الكلام / 880
Hadith Gradingالألبانی:صحيح
Hadith Takhrij«صحيح : أخرجه ابن أبى شيبة : 25650 و البيهقي فى الشعب : 1558 و ابن عبدالبر فى جامع العلم : 1133/2»
Explanation & Benefits
Shaykh Maulana Usman Muneeb
Benefits and Issues: The mistake in articulation points is called "lahn." Children may be given disciplinary punishment for incorrect pronunciation, etc. It is also understood from this that the Companions (radi Allahu anhum) used to pay great attention to the teaching of the Noble Qur’an.
Source: Fadlullah al-Ahad: Urdu Commentary on al-Adab al-Mufrad, Page: 880