The 40 Ramadanian Hadîth
Fasting is the quarter of Faith in accordance with the following two new prophetics (hadîth): "Fasting is half of constancy", and "Steadfastness is half of Faith. "
God said: "They slept little at night, and in the last hours of the night they implored forgiveness [of God]"
The Prophet (SWS) said: "He who will watch (by doing devotions) during the nights of Ramadan with faith and sincerity will obtain forgiveness of his past sins." Reported by Al-Bukhâri (2008) and Muslim (759).