“We were with the Messenger of
Allah (ﷺ) on one of his journeys on a hot day, and it was extremely
hot. A man would put his hand over his head because of the intense
heat. No one among the people was fasting except for the Messenger of
Allah (ﷺ) and ‘Abdullah bin Rawahah.”
Sunan Ibn Majah Book 7, Hadith 26