اِنَّمَا الْمُؤْمِنُوْنَ الَّذِيْنَ اٰمَنُوْا بِاللّٰهِ وَرَسُوْلِهٖ وَاِذَا كَانُوْا مَعَهٗ عَلٰٓى اَمْرٍ جَامِعٍ لَّمْ يَذْهَبُوْا حَتّٰى يَسْتَأْذِنُوْهُۗ اِنَّ الَّذِيْنَ يَسْتَأْذِنُوْنَكَ اُولٰۤىِٕكَ الَّذِيْنَ يُؤْمِنُوْنَ بِاللّٰهِ وَرَسُوْلِهٖۚ فَاِذَا اسْتَأْذَنُوْكَ لِبَعْضِ شَأْنِهِمْ فَأْذَنْ لِّمَنْ شِئْتَ مِنْهُمْ وَاسْتَغْفِرْ لَهُمُ اللّٰهَ ۗاِنَّ اللّٰهَ غَفُوْرٌ رَّحِيْمٌ ( النور: ٦٢ )
Innamal mu'minoonal lazeena aamanoo billaahi wa Rasoolihee wa izaa kaanoo ma'ahoo 'alaaa amrin jaami'il lam yazhaboo hataa yastaazinooh; innal lazeena yastaa zinookana ulaaa'ikal lazeena yu'minoona billaahi wa Rasoolih; fa izas taazanooka liba'di shaanihim faazal liman shi'ta minhum wastaghfir lahumul laah; innal laaha Gahfoor Raheem (an-Nūr 24:62)
The believers are only those who believe in Allah and His Messenger and, when they are [meeting] with him for a matter of common interest, do not depart until they have asked his permission. Indeed, those who ask your permission, [O Muhammad] – those are the ones who believe in Allah and His Messenger. So when they ask your permission due to something of their affairs, then give permission to whom you will among them and ask forgiveness for them of Allah. Indeed, Allah is Forgiving and Merciful. (An-Nur  : 62)
1 Mufti Taqi Usmani
The believers are only those who believe in Allah and His messenger and who, when they are with him for a collective matter, do not leave unless they seek his permission. Surely, those who seek your permission are the ones who believe in Allah and His messenger. So, if they seek permission from you for some business of theirs, give permission to whom you wish from among them, and pray to Allah for their forgiveness. Surely, Allah is Most-Forgiving, Very-Merciful.