Sayyiduna Jabir bin Abdullah (may Allah be pleased with him) narrated that the Prophet (peace and blessings be upon him) was on a journey (the expedition of conquest). He saw that people were shading a man. He asked, "What is the matter?" The people said, "He is fasting." The Prophet (peace and blessings be upon him) said, "It is not a good deed to fast while traveling."
Hadith Referenceاللؤلؤ والمرجان / كتاب الصيام / 681
Hadith Gradingمحدثین:«صحیح»
Hadith Takhrij«صحیح، أخرجه البخاري في: 30 كتاب الصوم: 36 باب قول النبي صلی اللہ علیہ وسلم لمن ظلل عليه واشتد الحر ليس من البر الصوم في السفر»