What did Prophet Muhammad (peace be upon him) say about the gate called Rayyan in Paradise?
 Sahl b. Sa'd (Allah be pleased with him) reported Allah's Messenger (may peace be upon him) as saying:                      In Paradise there is a gate which is called Rayyan through which only the observers of fast would enter on the Day on Resurrection. None else would enter along with them. It would be proclaimed: Where are the observers of fast that they should be admitted into it? -and when the last of them would enter, it would be closed and no one would enter it.