It is narrated from Sayyidah Umm Salamah (may Allah be pleased with her) that when the Prophet (peace and blessings be upon him) said what he said about the waist-wrapper (izar), Sayyidah Umm Salamah (may Allah be pleased with her) said: O Messenger of Allah! What should women do? He (peace and blessings be upon him) said: "They should let it hang down a hand-span." She said: Then their feet would be exposed. He (peace and blessings be upon him) said: "Then a forearm's length; they should not exceed it."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 20309
It is narrated from Sayyidah Umm Salamah (may Allah be pleased with her) that when the Messenger of Allah (peace and blessings be upon him) said what he said about the hem of the garment, Sayyidah Umm Salamah (may Allah be pleased with her) said: What is the ruling for us? He (peace and blessings be upon him) said: "Let it trail a hand-span." She said: Then both feet would be exposed. He (peace and blessings be upon him) said: "Let it trail a forearm's length."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 20310