Prayer: The Time of the Nafilah of Maghrib
Practical Laws of Islam as per the teachings of Ayatullah Sistani
Ruling 757
The time for the nafilah of maghrib starts after performing the maghrib prayer and continues until the time it is possible to perform it after performing the maghrib prayer within its prescribed time. However, if one delays performing the nāfilah of maghrib until the redness of the western sky – which is visible after the sun sets – disappears, it is better that he first perform the ʿishāʾ prayer.