"The Messenger of Allah said: 'It is not righteousness to fast when traveling."' (Sahih) Abu 'Abdur-Rahman (An-Nasai) said: This is a mistake, and what is correct is the one that is before it. We do not know of anyone who followed up Ibn Kathir.
Reference: Sunan an-Nasa'i 2256 In-book : Book 22, Hadith 167 English translation : Vol. 3, Book 22, Hadith 2258
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