"Someone who heard it from Jabir told me something similar."
Sunan an-Nasa'i Book 22, Hadith 170
← Previous Hadith the Messenger of Allah passed by a man in the shade of a tree on whom water was being sprinkled. He said: "What is the matter with your companion?" They said: "O Messenger of Allah, he is fasting." He said: "It is not righteousness to fast when traveling. Take to the concession which Allah has granted you, accept it."

Sunan an-Nasa'i Book 22, Hadith 169 Next Hadith → "It is not righteousness to fast when traveling. Take to the concession which Allah, the mighty and sublime, has granted you, accept it."

Sunan an-Nasa'i Book 22, Hadith 171