It is narrated from Jabir bin Abdullah (may Allah be pleased with him) that the Prophet (ﷺ) set out towards Makkah in the month of Ramadan in the year of the conquest of Makkah, and he was fasting, and he instructed the people not to fast. It was said to him that when you fasted, the people also fasted. The Prophet (ﷺ) then called for a vessel of water, placed it on his hand, and told those in front of him to break their fast. When they had broken their fast, and those with them had also broken their fast, the Prophet (ﷺ) lifted the vessel, brought it to his mouth, and drank the water. In both of their narrations, or in the narration of someone else, it is mentioned that this happened after Asr.
Hadith Referenceمسند الإمام الشافعي / كتاب الصيام / 617
Hadith Takhrijأخرجه مسلم، الصيام، باب جواز الصوم والفطر في شهر رمضان للمسافر في غير معصية (1114).