Sayyidina Ibn Umar (RA) reported that Allah’s Messenger (SAW) said, “If anyone trails arrogantly his lower garment below his ankles then Allah will not look at huh on the day of Resurrection.” Sayyidah Umm Salamah asked him. “How should women make their skirts?” He said, “Let them leave it down a span.” She said, “In that case, a woman’s legs might be uncovered.” So, he said, “They may let it down a cubit, but not more.”
[Muslim 2085]