ثم إجماع المتأخرين على أحد أقوال السلف بمنزلة الصحيح من الآحاد.
The later agreement upon one earlier position is compared with a sound solitary report.
The comparison identifies a weaker rank than the earlier categories, not the grading of any particular hadith. It is an analogy of evidentiary force within this legal-theory classification.
The proper procedure is to identify how the consensus was formed before asserting the degree of authority it carries.
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Authority, Ranks and Composite Forms of Ijma
ثم إجماع المتأخرين على أحد أقوال السلف بمنزلة الصحيح من الآحاد.
The later agreement upon one earlier position is compared with a sound solitary report.
The comparison identifies a weaker rank than the earlier categories, not the grading of any particular hadith. It is an analogy of evidentiary force within this legal-theory classification.
The proper procedure is to identify how the consensus was formed before asserting the degree of authority it carries.