And from him, from Muhammad ibn Yahya, who transmitted it with an elevated chain from al-Ridha عليه السلام:
(Imam عليه السلام) said: "The imam (of prayer) bears the mistakes of those behind him, except for the Takbirat al-Iftitah (the opening Takbir)."
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 2, p. 153