Anas said that when the people of Mecca asked God's messenger to show them a sign, he showed them the moon in two pieces between which they were able to see Hira. (Bukhari and Muslim.)
Hadith Referenceمشكوة المصابيح / كتاب الفضائل والشمائل / 5854
Hadith Gradingالألبانی:مُتَّفق عَلَيْهِ | زبیر علی زئی:متفق عليه
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «متفق عليه، رواه البخاري (3868) و مسلم (46/ 2802)»