Mishkat al-Masabih
Mishkat al-Masabih 5854
The Signs of Prophecy - Section 1
Arabic hadith text
وَعَن أنسٍ قَالَ: إِنَّ أَهْلَ مَكَّةَ سَأَلُوا رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنْ يُرِيَهُمْ آيَةً فَأَرَاهُمُ الْقَمَرَ شِقَّتَيْنِ حَتَّى رَأَوْا حِرَاءً بَيْنَهُمَا. مُتَّفق عَلَيْهِ
Translation
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.)