﴿وَالْقَوَاعِدُ مِنَ النِّسَاءِ اللَّاتِي لَا يَرْجُونَ نِكَاحًا فَلَيْسَ عَلَيْهِنَّ جُنَاحٌ أَنْ يَضَعْنَ ثِيَابَهُنَّ غَيْرَ مُتَبَرِّجَاتٍ بِزِينَةٍ ۖ وَأَنْ يَسْتَعْفِفْنَ خَيْرٌ لَهُنَّ ۗ وَاللَّهُ سَمِيعٌ عَلِيمٌ﴾
60. And as for women past child-bearing who do not expect wed-lock, it is no sin on them if they discard their (outer) clothing in such a way as not to show their adornment. But to refrain (i.e. not to discard their outer clothing) is better for them. And Allâh is All-Hearer, All-Knower.