question #1 Sahih Muslim 1122a, Book 13, Hadith 136 : What can be inferred about the permissibility of breaking a fast during travel in extreme conditions?

We set out during the month of Ramadan with the Messenger of Allah (ﷺ) in such an intense heat that one of us would place his hand over his head (in order to protect himself) against the excessive heat, and none among us was observing the fast, except the Messenger of Allah (ﷺ) and ‘Abdullah b. Rawaha.