Narrated Yusuf bin Mahik:
I was in the house of `Aisha, the mother of the Believers. She said, “This revelation: “Nay, but the Hour is their appointed time (for their full recompense); and the Hour will be more previous and most bitter.” (Al-Qamar 46) was revealed to Muhammad at Makkah while I was a playfull little girl.”
حَدَّثَنَا إِبْرَاهِيمُ بْنُ مُوسَى، حَدَّثَنَا هِشَامُ بْنُ يُوسُفَ، أَنَّ ابْنَ جُرَيْجٍ، أَخْبَرَهُمْ قَالَ أَخْبَرَنِي يُوسُفُ بْنُ مَاهَكَ، قَالَ إِنِّي عِنْدَ عَائِشَةَ أُمِّ الْمُؤْمِنِينَ قَالَتْ لَقَدْ أُنْزِلَ عَلَى مُحَمَّدٍ صلى الله عليه وسلم بِمَكَّةَ، وَإِنِّي لَجَارِيَةٌ أَلْعَبُ {بَلِ السَّاعَةُ مَوْعِدُهُمْ وَالسَّاعَةُ أَدْهَى وَأَمَرُّ}
Reference : Sahih al-Bukhari 4876
In-book reference : Book 65, Hadith 397
USC-MSA web (English) reference : Vol. 6, Book 60, Hadith 399