The moon split during the time of the Messenger of Allah ﷺ.
إن القمر انشق على زمان رسول الله ﷺ.
No references are available.
Bukhari narrated it in the Book of Virtues (2803) and Muslim in the Book of the Description of the Day of Resurrection (3638), both through Bakr bin Mudar, who said, Jafar bin Rabia told us, from Arak bin Malik, from Ubaydullah bin Abdullah bin Utba bin Masud, from Ibn Abbas, who said, and then he mentioned it.