Explanation

The Companions of the Prophet (may Allah's peace and blessings be upon him) were with him during one of his journeys, and some of them were fasting, while others were not. The Messenger of Allah (may Allah's peace and blessings be upon him) approved of the action of both parties. On a hot day, they stopped in some place so as to have a rest from the hardship of travel and the scorching heat of noon time. Those who were fasting fell to the ground due to the heat and thirst, and were unable to do any work. Meanwhile, those who were not fasting pitched the tents, watered the camels, and served their fasting brothers. When the Messenger of Allah (may Allah's peace and blessings be upon him) saw this service that they provided the army with, he encouraged them and said: "Those who were not fasting today have taken all the reward.”