Ahmad ibn Muhammad ibn Isa from Ali ibn al-Hakam from Dhurayh ibn Muhammad al-Muharibi from Abu Abdillah عليه السلام, who said:
I asked Him عليه السلام about a man who forgets to say the Takbir until he has already recited (Qur’an). Imam عليه السلام said: "Let him say the Takbir."
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 2, p. 152