Sayyidah Aishah (may Allah be pleased with her) said: We set out with the Messenger of Allah (peace and blessings be upon him) in the year of the Farewell Hajj. Some of us recited the talbiyah for Umrah only, some for both Hajj and Umrah, and some for Hajj only, and the Messenger of Allah (peace and blessings be upon him) recited the talbiyah for Hajj. Whoever had recited the talbiyah for Umrah only came out of ihram, but whoever had recited the talbiyah for Hajj only, or for both Hajj and Umrah, could not come out of ihram before the Day of Sacrifice (Yawm al-Nahr).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 8735