Al-Husayn ibn Said, from Safwan ibn Yahya, from Abu al-Hasan عليه السلام, peace be upon him:
That Imam عليه السلام was asked about ‘a man who travels in the month of Ramadan and fasts.’ Imam عليه السلام said: “Fasting during travel is not from righteousness.”
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 4, p. 284