Recite what is sent of the Book by inspiration to thee, and establish regular prayer: for prayer restrains from shameful and evil deeds; and remembrance of Allah is the greatest (thing in life) without doubt. And Allah knows the (deeds) that ye do. 29:45
Hadith of the day
Everything has a tax, and the tax for the bodies is recommended fasting.
Ibn Shuba al-Harrani, Tuhaf al-'Uqul, p.425 Imam Musa Al Kadhim (as)