Multiplicity of the Ranks of Authentic and Ḥasan Reports

The grades of a ṣaḥīḥ (authentic) or ḥasan (fair) ḥadīth—whether the grade is intrinsic to the report or acquired through supporting evidence—also branch out into several levels. The variation reflects differing degrees of completeness in the requisite qualities that define the two categories, even though every report so labeled shares the underlying essence of authenticity or ḥasan status.

The scholars have catalogued these degrees of authenticity, identified them, and cited representative isnāds. They observe that the terms uprightness (ʿadālah) and precision (ḍabṭ) apply to all the narrators in such chains, yet some narrators still stand above others.

The Soundest Chains of Transmission

As for declaring a single, specific isnād to be “the soundest of all chains” without qualification, the authorities have differed. Some maintained that the soundest chain is: Zayn al-ʿĀbidīn from his father al-Ḥusayn, from his grandfather ʿAlī ibn Abī Ṭālib. Others held it to be: Mālik from Nāfiʿ from Ibn ʿUmar. Still others favored: al-Zuhrī from Sālim from Ibn ʿUmar.

The correct view is that it is impermissible to pass an absolute judgment that any one chain is the soundest of all. That said, the Companions themselves occupy varying degrees of superiority, and a number of isnāds fall within those higher ranks.