Because difficulties and hardships exist on our path in life, we have been instructed to fast in the midst of the severities of our difficulties. The Qur’an has taught us, “And seek assistance through patience and prayer” [2:153] and in the narrations, this patience has been interpreted as referring to “fasting”. In a narration attributed to Imam Sadiq (a), it has been said that, “A person should fast whenever a hardship or calamity befalls them”. One must fast to overcome and prevent such situations. If someone fasts for the sake of Allah, He will solve that problem, as all affairs lie in His hands.
Ayatullah Jawadi Amuli