Sahih al-Bukhari 1944Book 30, Hadith 51
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ، أَخْبَرَنَا مَالِكٌ، عَنِ ابْنِ شِهَابٍ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ بْنِ عُتْبَةَ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم خَرَجَ إِلَى مَكَّةَ فِي رَمَضَانَ فَصَامَ حَتَّى بَلَغَ الْكَدِيدَ أَفْطَرَ، فَأَفْطَرَ النَّاسُ. قَالَ أَبُو عَبْدِ اللَّهِ وَالْكَدِيدُ مَاءٌ بَيْنَ عُسْفَانَ وَقُدَيْدٍ.
Allah's Messenger (ﷺ) set out for Mecca in Ramadan and he fasted, and when he reached Al-Kadid, he broke his fast and the people (with him) broke their fast too. (Abu `Abdullah said, "Al-Kadid is a land covered with water between Usfan and Qudaid.")