Sayyiduna Jabir bin Abdullah (may Allah be pleased with them both), describing the Hajj of the Prophet (peace and blessings be upon him), said that after we had performed tawaf, he (peace and blessings be upon him) commanded us to leave ihram, and the Prophet (peace and blessings be upon him) said: "When you intend to set out for Mina, begin the talbiyah." So we began the talbiyah from al-Batha'.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 8938