Syedna Abu Saeed Khudri (may Allah be pleased with him) says: We traveled towards Makkah Mukarramah in the company of the Messenger of Allah (peace and blessings be upon him) while we were fasting. We camped at a place, and there the Messenger of Allah (peace and blessings be upon him) said: "You have come close to the enemy, and it is more beneficial for you not to fast." Since this was a concession, some of us kept the fast and some did not. After that, when we camped at another place, the Prophet (peace and blessings be upon him) again said: "In the morning you will attack the enemy, and it is more beneficial for you not to fast, so do not fast." This was a definite command from the Prophet (peace and blessings be upon him), so we all abandoned fasting. However, I saw that even after this, we, the companions, used to fast while traveling with the Messenger of Allah (peace and blessings be upon him).