Surah An-Nur, ayah 59

وَإِذَا بَلَغَ ٱلۡأَطۡفَٰلُ مِنكُمُ ٱلۡحُلُمَ فَلۡيَسۡتَـٔۡذِنُواْ كَمَا ٱسۡتَـٔۡذَنَ ٱلَّذِينَ مِن قَبۡلِهِمۡۚ كَذَٰلِكَ يُبَيِّنُ ٱللَّهُ لَكُمۡ ءَايَٰتِهِۦۗ وَٱللَّهُ عَلِيمٌ حَكِيمٞ ٥٩

Wa idhā balaghal-atfālu minkumul-huluma falyasta'dhinū kamasta'dhanal-ladhīna min qablihim kadhālika yubayyinullāhu lakum āyātihī wallāhu 'alīmun hakīm

And when the children among you reach puberty, let them ask permission [at all times] as those before them have done. Thus does Allāh make clear to you His verses; and Allāh is Knowing and Wise.