Hariz, from Abu Basir, who said:
I (narrator) said to Abu Ja’far عليه السلام, peace be upon him: “A man was made unconscious for a month; does he make up anything of his prayer?” Imam عليه السلام said: “He makes up three days of it.”
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 4, p. 314