The Shaykh (Al-Mufid), may Allah سبحانه وتعالى have mercy on him, said: “Missed supererogatory prayers (nawafil) may be made up at any time, except during the time of an obligatory prayer, or at sunrise or sunset. And it is disliked to make up nawafil during the yellowing of the sun until it sets.” What has preceded contains comprehensive evidence for this, and what further clarifies it is what was narrated:
Commentary #13