Jabir bin Abdullah (may Allah be pleased with them both) said: We came with the Messenger of Allah (peace and blessings be upon him) while we were saying: "Labbayka bil-hajj" (Here I am, for Hajj). The Messenger of Allah (peace and blessings be upon him) ordered us, so we made it an Umrah.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 8998