ذِكْرُ الزَّجْرِ عَنْ أَنْ تُسْبِلَ الْمَرْأَةُ إِزَارَهَا أَكْثَرَ مِنْ ذِرَاعٍ
When the Messenger of Allah ﷺ mentioned lower garment, Umm Salamah, wife of the Messenger of Allah ﷺ, asked him: And a woman, Messenger of Allah? He replied: She may hang down a span. Umm Salamah said: Still it (foot) will be uncovered. He said: Then a forearm's length, nor exceeding it. (Using translation from Abū Dāʾūd 4117)
أَنَّ أُمَّ سَلَمَةَ زَوْجَ النَّبِيِّ ﷺ قَالَتْ لِرَسُولِ اللَّهِ حِينَ ذُكِرَ الْإِزَارُ فَالْمَرْأَةُ يَا رَسُولَ اللَّهِ؟ قَالَ «تُرْخِي شِبْرًا» قَالَتْ أُمُّ سَلَمَةَ إِذًا تَنْكَشِفُ عَنْهَا قَالَ «فَذِرَاعًا لَا تَزِيدُ عَلَيْهِ»