Sunan an-Nasa'i 2260
سنن النسائي#2260SahihIt was narrated from Jabir bin 'Abdullah that the Messenger of Allah said:"It is not righteousness to fast when traveling. Take to the concession which Allah, the mighty and sublime, has granted you, accept it
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiHasan
In-book reference: 22:171