Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) narrates: I heard the Prophet (peace and blessings be upon him) say: "There is a person among you who will fight for the interpretation of the Qur'an just as I fought on the basis of its revelation." Sayyiduna Abu Bakr (may Allah be pleased with him) said: O Messenger of Allah! Will I be that person? The Prophet (peace and blessings be upon him) said: No. Sayyiduna Umar (may Allah be pleased with him) said: O Messenger of Allah! Will I be that person? The Prophet (peace and blessings be upon him) said: No, rather it will be the one who is mending the shoe. The narrator states: The Prophet (peace and blessings be upon him) had given his shoe to Sayyiduna Ali (may Allah be pleased with him) so that he could mend it.
Hadith Referenceصحیح ابن حبان / كتاب إخباره ﷺ عن مناقب الصحابة رجالهم ونسائهم بذكر أسمائهم رضوان الله عليهم أجمعين / 6937
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - «الصحيحة» (2487).فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرط مسلم