´It was narrated that 'Ubaid bin Jraij said:` "I said to Ibn 'Umar: 'I saw you begin the Talbiyah when your she-camel stood up with you. He said: "The Messenger of Allah used to begin the Talbiyah when his she-camel stood up with him."
Hadith ReferenceSunan an-Nasa'i / The Book of Hajj / Hadith: 2761