of Arabic—its grammar, lexicon, and morphology—as well as of the principles and subsidiary rulings of jurisprudence, and of hadith, history, and the affairs of humankind. When these disciplines are at his disposal, he will derive great benefit from the book and will be able to discern between sound and weak hadith. This is the distinctive privilege of the hadith scholar: whoever attains it, fulfils its conditions, and acts upon it will outstrip the people of his age in this science and, if Allah wills, will be gathered on the Day of Resurrection beneath the Muhammadan banner. (1)

Seventh – The Critical Method
Imām al-Dhahabī lavished the utmost care upon critical evaluation, giving it a prominent place in his works and even authoring dedicated, beneficial treatises on the subject. Consequently, we find him paying extraordinary attention to criticism throughout his writings, most notably in his priceless Siyar Aʿlām al-Nubalāʾ, where he applied it to every piece of material and treated it as a fundamental pillar of his method.

This concern and diligence originate in his intellectual formation, which is inseparably linked to the study, transmission, and deep understanding of the noble hadith—a discipline that requires clarifying the states of narrators and assessing the degree of confidence they deserve by distinguishing the truthful from the false. Al-Dhahabī then extended that requirement to his entire work, whether the entries dealt with hadith specialists or with others, whether they belonged to the earliest generations or to later ones.

In truth, the hadith masters devised research procedures that stand among the most advanced scientific methodologies—methods unknown to Europeans until very late periods. Scholars in other arts and sciences—historians, linguists, men of letters, jurists, and others—have likewise profited from them. (2)