Riyad as-Salihin, Book 9, Hadith 1264 (In-Book) ⓘ
Ibn 'Abbas (May Allah be pleased with them) reported: It was the practice of the Messenger of Allah to not to omit fast on 'bright days' whether he was staying at a place or on a journey.[An-Nasa'i].
وعن ابن عباس، رضي الله عنهما، قال: كان رسول الله صلى الله عليه وسلم "لا يفطر أيام البيض في حضر ولا سفر" ((رواه النسائي بإسناد حسن)).