From him, from Faddalah, from al-‘Ala’, from Muhammad ibn Muslim:
Abu Ja‘far عليه السلام, peace be upon him, said: "If forgetfulness becomes frequent for you, then proceed with your prayer, for it is likely to leave you. Indeed, it is from Shaytan."
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 2, p. 369