From him, from Muhammad ibn Ziyad, from Abdullah ibn Sinan:
Abu Abdillah عليه السلام, peace be upon him, said: "The time for Maghrib is from when the sun sets until the stars become intertwined."
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 2, p. 275