It is narrated from Sayyiduna Abu Malik al-Ash'ari (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever, after believing in Allah, does not associate anything with Him, establishes the obligatory prayer, pays the obligatory zakah, fasts Ramadan, listens and obeys, and dies in that state, Paradise becomes binding for him."
Hadith Referenceالمعجم الكبير للطبراني / باب الحاء / 3430