Anas bin Malik reported,

We were with the Prophet ﷺ, and most of us had no shade except what we made by sheltering under our cloaks. Those who were fasting did no work, while those who had broken their fast tended to the camels, served the group, and carried out the labor. The Prophet ﷺ said, "Those who broke their fast have taken away the reward today."

حدثنا سليمان بن داود أبو الربيع عن إسماعيل بن زكرياء حدثنا عاصم عن مورق العجلي

عن أنس رضي الله عنه قال

كنا مع النبي ﷺ أكثرنا ظلا الذي يستظل بكسائه وأما الذين صاموا فلم يعملوا شيئا وأما الذين أفطروا فبعثوا الركاب وامتهنوا وعالجوا فقال النبي ﷺ ذهب المفطرون اليوم بالأجر