Hadith No: 1
Ibn Abi Shaibah - Al-Kitab al-Musannaf fi al-Ahadith wa al-Athar
Book of Virtues - Virtues of Ali ibn Abi Talib (ra)
Volume: (6) - Page Number: (367)
32079 - Abdullah ibn Numayr narrated to us, from al-Harith ibn Husayrah, who said: Abu Sulayman al-Juhani - meaning Zayd ibn Wahb - narrated to me, saying: I heard Ali on the pulpit, saying: "I am Abdullah and the brother of His Messenger"(s). No one said this before me, and no one will say it after me except a lying fabricator.

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Reference: Al-Musannaf Book 6

Hadith No: 2
Ibn Abi Shaybah - Al-Kitab al-Musannaf fi al-Ahadith wal-Athar
Book of Virtues - Virtues of Ali ibn Abi Talib (ra)
Volume: (6) - Page Number: (368)
32084 - Abdullah ibn Numayr narrated to us, from al-'Ala ibn al-Salih, from al-Minhāl from Ubbad ibn Abdullah, who said: I heard Ali say: "I am Abdullah and the brother of His Messenger, and I am the greatest truthful one (as-Siddiq al-Akbar). No one will say it after me except a lying fabricator. And I prayed before the people by seven years."

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Reference: Al-Musannaf Book 6

Hadith No: 3
Ibn Abi Shaibah - Al-Kitab al-Musannaf fi al-Ahadith wal-Athar
Kitab al-Fadail - Fadail of Ali ibn Abi Talib (RA)
Volume: (6) - Page Number: (375)
32141 - Abdullah ibn Numayr narrated to us, from Hajjaj, from al-Hakam, from Muqsim from Ibn Abbas that the Prophet (peace be upon him and his holy progeny) said to Ali: "You are my brother and companion."

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Reference: Al-Musannaf Book 6