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Authentication of Hadith: Redefining the Criteria - Kindle edition by Khan, Israr Ahmad. Religion & Spirituality Kindle eBooks @ Amazon.com.

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Amazon.com: A Textbook of Hadith Studies: Authenticity, Compilation, Classification and Criticism of Hadith (9780860374350): Kamali, Mohammad Hashim: Books

A Textbook of Hadith Studies: Authenticity, Compilation, Classification and Criticism of Hadith (Mohammad Hashim Kamali) : Mohammad Hashim Kamali : Free Download, Borrow, and Streaming: Internet Archive

Contradictory Examples:

Bukhari Volume 4, Book 56, Number 747:

Narrated Rabia bin Abi Abdur-Rahman:

I heard Anas bin Malik describing the Prophet saying, "He was of medium height amongst the people, neither tall nor short; he had a rosy color, neither absolutely white nor deep brown; his hair was neither completely curly nor quite lank. Divine Inspiration was revealed to him when he was forty years old. He stayed ten years in Mecca receiving the Divine Inspiration and stayed in Medina for ten more years. When he expired, he had scarcely twenty white hairs in his head and beard." Rabi'a said, "I saw some of his hairs and it was red. When I asked about that, I was told that it turned red because of scent."

Bukhari Volume 5, Book 58, Number 242:

Narrated Ibn Abbas:

Allah's Apostle started receiving the Divine Inspiration at the age of forty. Then he stayed in Mecca for thirteen years, receiving the Divine Revelation. Then he was ordered to migrate and he lived as an Emigrant for ten years and then died at the age of sixty-three (years).