And from him, from Ibn Abi Umayr, from Hammad ibn Uthman, from Umar ibn Yazid, who said:
I (narrator) asked Abu Abdillah عليه السلام, peace be upon him, about ‘a man who travels in the month of Ramadan, does he have the right to have intercourse with women?’ Imam عليه السلام said: “Yes.”
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 4, p. 312