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 made the talbiyah for Umrah, some for both Hajj and Umrah, and some for Hajj alone, and the Messenger of Allah (peace and blessings be upon him) made the talbiyah for Hajj. Those who had made the talbiyah for Hajj, or for both Hajj and Umrah, did not leave ihram until the Day of Sacrifice.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 8801