The Prophet ﷺ set out from Madinah during Ramadan with ten thousand men, this being eight and a half years after his arrival in Madinah. He and the Muslims accompanying him traveled toward Makkah while fasting, until they reached al-Kadid, a watering place between Usfan and Qudayd, where he broke his fast and they broke theirs.
أن النبي ﷺ الخرج في رمضان من المدينة ومعه عشرة آلاف، وذلك على رأس ثمان سنين ونصف، من مقدمه المدينة، فصار هو ومن معه من المسلمين إلى مكة يصوم ويصومون، حتى بلغ الكديد- وهو ماء بين عسفان وقديد- أفطر و أفطروا.
Bukhari related it in the Book of Military Expeditions (4276), and Muslim in the Book of Fasting (1113, 0000), both of them from the hadith of Abdul-Razzaq, who said, Mamar informed us, from Zuhri, from Ubaydullah bin Abdullah bin Utba, from Ibn Abbas, and he recounted it. Muslim referred the wording of the hadith back to the preceding chain of transmission, which is what he related through several routes from Layth, from Zuhri, and it does not mention the number of the army or the year of the expedition, but it does mention the time of entering Makkah. Muhammad bin Ishaq related it, as found in Sirat bin Hisham (2/399–400), at length, as will come later.