Surah Taha 20:94
قَالَ يَبْنَؤُمَّ لَا تَأْخُذْ بِلِحْيَتِى وَلَا بِرَأْسِىٓ ۖ إِنِّى خَشِيتُ أَن تَقُولَ فَرَّقْتَ بَيْنَ بَنِىٓ إِسْرَٰٓءِيلَ وَلَمْ تَرْقُبْ قَوْلِى
[Aaron] said, "O son of my mother, do not seize [me] by my beard or by my head. Indeed, I feared that you would say, 'You caused division among the Children of Israel, and you did not observe [or await] my word.'"
Translation: Saheeh International
Tafsir
He Aaron said ‘O son of my mother read ya’bna’ummi or ya’bna’umma meaning ummī ‘my mother’ the mention of her is more effective in provoking the affection of his heart — do not clutch my beard which he had seized with his left hand or my head! for he had seized his hair with his right hand in anger. …
Excerpt from Tafsir al-Jalalayn, commentary on 20:94, via Quran.com. The reader has the full commentary and 9 more tafsirs.