Musnad Abu Ya'la al-Mawsili 115:89

Ubayd Allah ibn Umar narrated to us, Yahya ibn Sa’id narrated to us, from Shu’bah, from Qatadah, from Anas, regarding His saying: "The Hour has drawn near, and the moon has split," he said: "It split during the time of the Messenger of Allah, may Allah bless him and grant him peace."