And from him, from Ali, from Harun ibn Muslim, from Masadah, from Abu Abdillah عليه السلام, peace be upon him, who said:
Imam عليه السلام said: “The sleep of the fasting person is worship, and his breath is glorification.”
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 4, p. 254