بُنِيَ الْإِسْلَامُ عَلَى خَمْسَةِ أَشْيَاءَ عَلَى الصَّلَاةِ وَ الزَّكَاةِ وَ الْحَجِّ وَ الصَّوْمِ وَ الْوَلَايَةِ وَ قَالَ رَسُولُ اللَّهِ ص الصَّوْمُ جُنَّةٌ مِنَ النَّارِ.
“Abu Ja’far (a.s.), has said, ‘Islam is founded on five isssues. It is founded on Salat (prayer), zakat, al-Hajj, Fasting and al-Wilayat (belief in Divine Authority of ’A’immah). The Messenger of Allah has said, ‘Fasting is a shield against the fire of hell.”