Musnad Ahmad 27:42

Isma'il narrated to us, Ayyub informed us, from Nafi', from Ibn 'Umar, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Indeed, the one who drags his garment out of pride, Allah will not look at him on the Day of Resurrection." Nafi' said: So I was informed that Umm Salamah said: "Then what about us?" He said: "A span." She said: "Then our feet will be exposed." He said: "A cubit, do not exceed it."