Fasting is a shield
الصِّيَامُ جُنَّةٌ
As-siyamu junnah.
"Fasting is a shield."
Narrated by Abu Hurayrah. Sahih al-Bukhari 1894, Sahih Muslim 1151
A short reflection
A shield from what? From sin today, and from the Fire tomorrow. Hunger, for a reason, is armour.