691Al-Adab Al-MufradSahih (Al-Albani)حَدَّثَنَا أَبُو نُعَيْمٍ، قَالَ: حَدَّثَنَا سُفْيَانُ، عَنْ عُبَيْدِ اللهِ، عَنْ نَافِعٍ قَالَ: كَانَ ابْنُ عُمَرَ يَضْرِبُ وَلَدَهُ عَلَى اللَّحْنِ.Nafi' said, "Ibn 'Umar used to strike his son for making grammatical mistakes."Reference: Al-Adab Al-Mufrad 880 In-book : Book 37, Hadith 6 English translation : Book 37, Hadith 880