Clothing (Kitab Al-Libas)
Dawud :: Book 32 : Hadith 4105
Narrated Umm Salamah, Ummul Mu'minin:
Safiyyah, daughter of AbuUbayd, said: When the Apostle of Allah (peace_be_upon_him) mentioned lower garment, Umm Salamah, wife of the Apostle of Allah (peace_be_upon_him), asked him: And a woman, Apostle 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.