It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Paradise has eight gates: seven are closed, and one gate is open for repentance until the sun rises from its direction."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 10441