(Annoor) 24 : 60
وَالْقَوَاعِدُ مِنَ النِّسَاءِ اللَّاتِي لَا يَرْجُونَ نِكَاحًا فَلَيْسَ عَلَيْهِنَّ جُنَاحٌ أَنْ يَضَعْنَ ثِيَابَهُنَّ غَيْرَ مُتَبَرِّجَاتٍ بِزِينَةٍ ۖ وَأَنْ يَسْتَعْفِفْنَ خَيْرٌ لَهُنَّ ۗ وَاللَّهُ سَمِيعٌ عَلِيمٌ
And for women of post-menstrual age who have no desire for marriage, there is no blame upon them for putting aside their outer garments without displaying adornment, but it is better for them to be modest, and Allah is the All-Hearing, All-Knowing.