And he also narrated from al-Nadr ibn Suwayd from Abdillah ibn Sinan from Abu Abdillah عليه السلام.
Imam عليه السلام said: “The prayer during travel is two rak’ahs, there is nothing before them and nothing after them, except for Maghrib, which is three.”
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 2, p. 14