Ahmad ibn Muhammad, from Muhammad ibn Ali, from Muhammad ibn Fudayl, from Musa ibn Bakr, from Abu al-Hasan عليه السلام, peace be upon him, who said:
Imam عليه السلام said: Imam Ali عليه السلام, peace be upon him, used to say: "Lending wealth is the protected enclosure of zakat."
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 4, p. 134