And from him, from al-Hasan, from Fadalah, from Ibn Sinan, who said: I heard Abu Abdillah عليه السلام say: "Indeed, the servant stands and makes up the ‘nafilah’ (recommended prayer), and the Lord عز وجل causes His سبحانه وتعالى angels to marvel at him. He عز وجل says: 'My angels, My servant is making up what I عز وجل did not make obligatory upon him.'"