When the Prophet [SAW] said what he said about the Izar, Umm Salamah said: "What about women?" He said: "Let it down a hand span." She said: "But then their feet will show." He said: "Then (let it down) a forearm's length, but no more than that." (Using translation from Nasāʾī 5338)
أَنَّ النَّبِيَّ ﷺ لَمَّا ذَكَرَ فِي الْإِزَارِ مَا ذَكَرَ قَالَتْ أُمُّ سَلَمَةَ يَا رَسُولَ اللهِ فَكَيْفَ النِّسَاءُ؟ قَالَ «يُرْخِينَ شِبْرًا» قَالَتْ إِذَنْ تَبْدُو أَقْدَامُهُنَّ قَالَ «فَذِرَاعٌ لَا يَزِدْنَ عَلَيْهِ»