Musnad Ahmad 25:61

Sufyan narrated to us, from Ibrahim ibn 'Uqbah, from Kurayb, from Ibn 'Abbas, who said: The Prophet, peace and blessings of Allah be upon him, was at al-Rawha', and he met a traveling party and greeted them. He said: "Who are the people?" They said: "Muslims." They said: "And who are you?" He said: "The Messenger of Allah." A woman became startled, so she took a young boy by his upper arm and brought him out from her litter. She said: "O Messenger of Allah, is there Hajj for this one?" He said: "Yes, and you have a reward."