Hadith No: 1
Al-Salihi al-Shami - Sabil al-Huda wa'l-Rashad fi Sirat Khayr al-Ibad
Summary of the Chapters of His Miracles (peace be upon him and his holy progeny) in His News of the Trials and Great Battles Occurring After Him
Chapter Nine: On His (peace be upon him and his holy progeny) Foretelling of the Battle of the Camel, Siffin, and Nahrawan, and the Fighting of Aisha, al-Zubair, and Ali (may Allah be pleased with them), and the Sending of the Two Arbitrators - Mention of the Battle of Siffin
Volume: (10) - Page Number: (150)
[The text is lengthy, so only the relevant excerpt is provided here]
- .... Al-Hakim narrated and authenticated it, as did al-Bayhaqi from Abu Sa'id, who said: We were with the Messenger of Allah (peace be upon him and his holy progeny) when his sandal strap broke. Ali delayed to repair it, and he walked for a little while, then said: "Indeed, among you is one who will fight for the interpretation of the Quran just as I fought for its revelation." Abu Bakr said: "I will," he replied: "No." Umar said: "I will," he replied: "No, but the one repairing the sandal strap."

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Reference: Sobol al-Huda wa al-Rashaad fi Seerah Khair al-'Ibaad Book 10

Hadith No: 2
Al-Salahi al-Shami - Subul al-Huda wa'l-Rashad fi Sirat Khayr al-Ibad
A Compilation of Chapters Mentioning the Ten Whom the Messenger of Allah (peace be upon him and his holy progeny) Witnessed to be in Paradise and Some of Their Virtues
Chapter Ten: Regarding Some Virtues of the Commander of the Faithful, Abu al-Hasan Ali ibn Abi Talib
Ibn Abd al-Muttalib ibn Hashim ibn Abd Manaf al-Qurashi al-Haashimi
Third: On His Virtues, Profound Knowledge, and Supplications
Volume: (11) - Page Number: (290)
[The text is lengthy, so only the relevant excerpt is provided here]
- .... And Abu Ya'la narrated with a chain of narrators deemed authentic from Abu Sa'id (may Allah be pleased with him) who said: I heard the Messenger of Allah (peace be upon him and his holy progeny) say: "Indeed, among you is one who will fight for the interpretation of the Quran just as I fought for its revelation." Abu Bakr said: "I am he, O Messenger of Allah." He replied: "No." Umar said: "I am he, O Messenger of Allah." He answered: "No, rather it is the one who is repairing the sandal." He had given Ali (peace be upon him and his holy progeny) his sandal to mend." And Abu Ya'la narrated with a chain of trustworthy narrators, except for Rabi' ibn Sahil, and his narrators will be clarified.

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Reference: Sobol al-Huda wa al-Rashaad fi Seerah Khair al-'Ibaad Book 11

Hadith No: 3
Al-Salahi al-Shami - Sabil al-Huda wa al-Rashad fi Sirat Khayr al-Ibad
The Collection of Chapters on the Ten Who Were Witnessed by the Messenger of Allah (peace be upon him and his holy progeny) to Have Paradise and Some of Their Virtues
Chapter Ten: Regarding Some Virtues of the Commander of the Faithful, Abu al-Hasan Ali ibn Abi Talib
Ibn Abd al-Muttalib, Ibn Hashim, Ibn Abd Manaf, al-Qurashi, al-Hashimi
Third: On His Virtues, Abundance of Knowledge, and Supplications
Volume: (11) - Page Number: (297)
[The text is lengthy, so only the relevant excerpt is provided here]
- .... And al-Hakim narrated from Umm Salama (may Allah be pleased with her) who said: The Messenger of Allah (peace be upon him and his holy progeny) said, "Ali is with the Quran, and the Quran is with Ali; they will not separate until they return to the Pond."

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Reference: Sobol al-Huda wa al-Rashaad fi Seerah Khair al-'Ibaad Book 11