It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "There are two things that make it obligatory: Whoever meets Allah in such a state that he does not associate anything with Him, he will enter Paradise; and whoever meets Allah in such a state that he associates something with Him, he will enter Hell."
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 14711
Hadith Gradingحکم دارالسلام:حديث صحيح، م: 93، وهذا إسناد حسن من أجل المبارك، وهو ابن فضالة البصري .