Muhammad ibn Al-Hasan said: “There is no contradiction between these two narrations and what we have presented previously from the narrations that Maghrib has two times: its beginning is the setting of the sun, and its end is the disappearance of the twilight or the intermingling of the stars. This is because if a person prays at the time when the redness disappears from the eastern horizon and performs his prayer with calmness, then he will not finish his obligatory and supererogatory prayers except that the twilight will have disappeared and the stars will have appeared.” And what further clarifies what we have already presented; that these two prayers (Maghrib and ʿIshaʾ) have two time ranges, and that the earlier narrations only negate the extension of the time, is what has been narrated:
Commentary #17