It wasnarrated from 'Abdur-Rahman bin 'Awf that the Messenger ofAllah(ﷺ) said:
"The one who fasts Ramadan while traveling is likeonewho breaks his fast when not traveling." (PT)
English reference (PT): Vol. 1, Book 7, Hadith 1666 (PT)
Arabic reference (PT): Book 7, Hadith 1735 (PT)