Fasting: Performing Maghrib and ʿIshaʾ Prayers Before Breaking the Fast
Practical Laws of Islam as per the teachings of Ayatullah Sistani
Ruling 1718
It is recommended for a fasting person to perform maghrib and ʿishāʾ prayers before breaking his fast. However, if someone is waiting for him or he is very drawn to food – such that he cannot pray with presence of heart – it is better that he first break his fast. However, as much as he possibly can, he should perform the prayers within their prime time (waqt al‑faḍīlah).[1]
-Ayatullah Sistani, Practical Laws of Islam, Fasting (Sawm)
1
This refers to the early period of the prescribed time for a prayer during which there is more reward for performing it.