Narrated `Abdullah:
The moon was cleft asunder while we were in the company of the Prophet, and it became two parts. The Prophet (ﷺ) said, Witness, witness (this miracle). (PT)
USC-MSA web (English) reference: Vol. 6, Book 60, Hadith 388 (PT)
Arabic reference (PT): Book 65, Hadith 4865 (PT)