Fasting is a great pillar of Islam. The person who does not fast in the month of Ramadhaan without a valid excuse commits a major sin.

Hazrat Rasulullah (sallallahu ‘alaihi wasallam) said, “The one who misses a single fast in the month of Ramadhaan without a concession (from the side of Shari’ah) or illness, he will not be able to compensate for (the blessing of) that one day even if he fasts for the rest of his life.” ^[1]