It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that someone asked the Prophet (peace and blessings be upon him): O Messenger of Allah! Which prayer is the most virtuous? He replied: The long prayer. He asked the Prophet (peace and blessings be upon him): O Messenger of Allah! Which jihad is the most virtuous? The Prophet (peace and blessings be upon him) said: That of the person whose horse’s legs are cut and his own blood is shed. He asked: Which migration is the most virtuous? The Prophet (peace and blessings be upon him) said: To abandon what Allah dislikes. He submitted: O Messenger of Allah! Which Islam is the best? The Prophet (peace and blessings be upon him) said: That other Muslims are safe from his tongue and hand. He asked: O Messenger of Allah! What are the two things that make something obligatory? The Prophet (peace and blessings be upon him) said: Whoever meets Allah in such a state that he does not associate anyone with Him will enter Paradise, and whoever dies associating anyone with Allah will enter Hell.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 15210
Hadith Gradingحکم دارالسلام:حديث صحيح، م- القطعة الأخيرة -: 93، وهذا إسناد ضعيف، النضر بن إسماعيل ليس بالقوي، وابن أبى ليلى سيئ الحفظ، وكلاهما متابع