Sahih Muslim | Book 7 | Hadith Number 2781

Narrated by Al-Qasim
Al-Qasim narrated from the Mother of the Believers (Hadrat 'Aisha) that she said: Messenger of Allah, the people return (from Mecca) having done two worships (both Hajj and Umra), but I am coming back with one (only). whereupon he said: You should wait and when the period of menses is over, you should go to Tan'im and put on ihram and then meet us at such and such time (and I think he said tomorrow); and (the reward of this Umra) is for you equal to your hardship or your spending.