Musannaf Ibn Abi Shayba 36:311

Yunus ibn Muhammad narrated to us, he said: Mujamma’ ibn Ya’qub narrated to us, he said: My father narrated to me, from his uncle ‘Abd al-Rahman ibn Yazid, from Mujamma’ ibn Jariyah, who said: I witnessed al-Hudaybiyah with the Messenger of Allah, may Allah bless him and grant him peace. When we departed from it, the people were urging their camels to move quickly. Some people said to others, "What is the matter with the people?" They said, "A revelation has come to the Messenger of Allah, may Allah bless him and grant him peace." He said: So we went out urging our mounts along with the people until we found the Messenger of Allah, may Allah bless him and grant him peace, standing at Kura’ al-Ghamim. When some of the people he wanted had gathered to him, he recited to them: "Indeed, We have given you a clear conquest." A man from his companions said, "O Messenger of Allah, is it a conquest?" He said, "Yes, by the One in Whose hand is my soul, it is indeed a conquest." He said: It was divided among the people of al-Hudaybiyah into eighteen shares. The army was one thousand five hundred, [including] three hundred cavalrymen. The cavalryman had two shares.