Musannaf Ibn Abi Shayba 8:965

Abu Bakr narrated to us, he said: Jarir narrated to us, from Mansur, from Kullab ibn Ya'la, from Mansur ibn Abi Sulayman, from the nephew of Jubayr ibn Mut'im, from Jubayr ibn Mut'im, who said: The Messenger of Allah (peace be upon him) stood at al-Marwah with scissors in his hand, with which he was shortening his hair, and he was saying: "The 'Umrah has entered into the Hajj until the Day of Resurrection. There is no harm in Islam. Sacrifice the camels abundantly, and raise your voices with the Takbir abundantly."