Al-Hasan ibn Mahbub, from Abu Hamza, who said:
I asked one of the Imams عليه السلام: "Should the shroud of the deceased be untied?" Imam عليه السلام replied: "Yes, and his face should be uncovered."
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 1, p. 485