Sayyiduna Jabir bin Abdullah (may Allah be pleased with them both), in the account of the Hajj of the Prophet (peace and blessings be upon him), said that he (peace and blessings be upon him) said the talbiyah of tawhid (the Oneness of Allah), and the people too said this talbiyah that they say, and the Messenger of Allah (peace and blessings be upon him) did not forbid them, and he kept to his own talbiyah. Sayyiduna Jabir (may Allah be pleased with him) said: We intended nothing but Hajj; we did not know of Umrah.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 8994