Sayyiduna Jabir (may Allah be pleased with him) said: A Bedouin came to the Prophet (peace and blessings be upon him) and said: O Messenger of Allah! What is it that makes (Paradise or Hell) binding? He (peace and blessings be upon him) said: "Whoever dies not associating anything with Allah will enter Paradise, and whoever dies associating something with Allah will enter Hell."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 13296