Musnad Ahmad 30:3140

Yunus ibn Muhammad narrated to us, he said: Al-Khazraj ibn Uthman al-Sa'di narrated to us, he said: Abu Ayyub, a freed slave of Uthman ibn Affan, narrated to us, from Abu Hurayrah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "The space of a whip of one of you in Paradise is better than the world and what is within it. And the space of a bow of one of you in Paradise is better than the world and what is within it. And the head-covering (nasif) of a woman of Paradise is better than the world and what is within it." He said: I said: "O Abu Hurayrah, what is the *nasif*?" He said: "The veil (al-khimar)."