An-Nur 24:60

وَٱلْقَوَٰعِدُ مِنَ ٱلنِّسَآءِ ٱلَّـٰتِى لَا يَرْجُونَ نِكَاحًا فَلَيْسَ عَلَيْهِنَّ جُنَاحٌ أَن يَضَعْنَ ثِيَابَهُنَّ غَيْرَ مُتَبَرِّجَـٰتٍۭ بِزِينَةٍ ۖ وَأَن يَسْتَعْفِفْنَ خَيْرٌ لَّهُنَّ ۗ وَٱللَّهُ سَمِيعٌ عَلِيمٌ

Wal-qawāʿidu mina l-nisāi allātī lā yarjūna nikāḥan falaysa ʿalayhinna junāḥun an yaḍaʿna thiyābahunna ghayra mutabarrijātin bizīnatin wa-an yastaʿfif'na khayrun lahunna wal-lahu samīʿun ʿalīmun

And women of post-menstrual age who have no desire for marriage - there is no blame upon them for putting aside their outer garments [but] not displaying adornment. But to modestly refrain [from that] is better for them. And Allāh is Hearing and Knowing.