Muhammad ibn Yaqub, from Muhammad ibn Yahya, from Ahmad ibn Muhammad ibn Ali ibn al-Hakam, from Musa ibn Bakr, who said:
He said: “For everything there is a zakat, and the zakat of the body is fasting.”
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 4, p. 253
