question #3 Sahih Muslim 1122b, Book 13, Hadith 137 : What does this narration indicate about the commitment of the Prophet (ﷺ) and Abdullah b. Rawaha to fasting?

We were with the Messenger of Allah (ﷺ) on some of his journeys on an intensely hot day so much so that a person would place his hand on his head (in order to protect himself) against excessive heat, and none amongst us was fasting but the Messenger of Allah (ﷺ) and Abdullah b. Rawaha