Abu Dawud Book 4, Hadith Number 1990.

Narated By AbdurRahman ibn AbuBakr : Hafsah, daughter of AbdurRahman ibn AbuBakr, reported on the authority of her father: The Apostle of Allah (PBUH) said to AbdurRahman: AbdurRahman, put your sister ‘Aisha on the back of the camel behind you and make her perform umrah from at-Tan’im. When you come down from the hillock (in at-Tan’im), she must wear (ihram for umrah), for this is an umrah accepted (by Allah).