Ibn ʿAbbas said, Messenger of Allah ﷺ fought the Ghazwa (i.e. battles of Al-Fath during Ramadan." Narrated Az-Zuhri: Ibn Al-Musaiyab (also) said the same. Ibn ʿAbbas added, "The Prophet ﷺ fasted and when he reached Al-Kadid, a place where there is water between Kudaid and 'Usfan, he broke his fast and did not fast afterwards till the whole month had passed away.  

أَخْبَرَهُ أَنَّ رَسُولَ اللَّهِ ﷺ غَزَا غَزْوَةَ الْفَتْحِ فِي رَمَضَانَ قَالَ وَسَمِعْتُ ابْنَ الْمُسَيَّبِ يَقُولُ مِثْلَ ذَلِكَ وَعَنْ عُبَيْدِ اللَّهِ أَنَّ ابْنَ عَبَّاسِ ؓ قَالَ صَامَ رَسُولُ اللَّهِ ﷺ حَتَّى إِذَا بَلَغَ الْكَدِيدَ الْمَاءَ الَّذِي بَيْنَ قُدَيْدٍ وَعُسْفَانَ أَفْطَرَ فَلَمْ يَزَلْ مُفْطِرًا حَتَّى انْسَلَخَ الشَّهْرُ