Yusuf ibn Abd al-Rahman
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Yusuf ibn Abd al-Rahman is an Islamic scholar and researcher in legal theory (usul al-fiqh), known for his treatise Hujjiyat al-Qiyas wa al-Radd ala al-Mukhalifin (The Evidential Authority of Analogy and the Refutation of the Opponents).
Legal Theory and Scholarly Positions
Yusuf ibn Abd al-Rahman focused on defending the evidential validity of analogical deduction (qiyas) as the fourth fundamental source of Islamic jurisprudence. He maintained that legal analogy is an indispensable necessity for deriving rulings because textual sources are finite while novel human occurrences are inexhaustible. In his analysis, he affirmed that an overwhelming consensus among the early generations, the four Sunni imams, and mainstream legal theorists supported the validity of analogy.
He traced the historical rejection of analogical deduction to the Mu'tazilite scholar Ibrahim al-Nazzam, followed by figures of the Zahirite school such as Dawud al-Zahiri, the Imamiyya, and certain modern political groups including Hizb al-Tahrir. In refuting their arguments and establishing the authoritative status of analogy through textual and rational proofs, his discourse engaged with foundational classical works of legal theory, notably al-Ghazali's al-Mustasfa, Ibn Qudama's Rawdat al-Nazir, and Ibn Qayyim al-Jawziyya's I'lam al-Muwaqqi'in.
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List of Works
Hujjiyat al-Qiyas wa al-Radd ala al-Mukhalifin (The Evidential Authority of Analogy and the Refutation of the Opponents) is a treatise in Islamic legal theory (Usul al-fiqh) devoted to defending the evidential validity of analogical deduction (Qiyas) and systematically responding to the arguments of those who reject it.