And from him, from Fadalah, from Hammad, from al-Fadl bin Abd al-Malik, who said:
Imam عليه السلام said to me: "If you do not remember the first two rak‘ahs, then repeat your prayer."
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 2, p. 187