Musannaf Ibn Abi Shayba 28:63

Muhammad ibn Bishr narrated to us, Abdullah ibn Umar narrated to us, from Nafi, from Salim, from Abu al-Jarrah, from Umm Habibah, from the Prophet, peace and blessings of Allah be upon him, who said: "The angels do not accompany a traveling party that has a bell with it."