Musnad Abu Ya'la al-Mawsili 155:336

Al-Harith ibn Surayj narrated to us, Marwan narrated to us, from Yazid ibn Kaysan, from Abu Hazim, from Abu Hurayrah, who said: We were sitting with the Prophet, may Allah bless him and grant him peace, and we were discussing the Night of Decree (Laylat al-Qadr). The Prophet, may Allah bless him and grant him peace, said: "Which of you remembers our reddish nights at Hunayn when the moon rose, and it was like a piece of a large bowl?"