question #2 Sahih al-Bukhari 1943, Book 30, Hadith 50 : How does Islam provide flexibility in religious obligations for travelers?

(the wife of the Prophet) Hamza bin `Amr Al-Aslami asked the Prophet, “Should I fast while
traveling?” The Prophet (ﷺ) replied, “You may fast if you wish, and you may not fast if you wish.”