Maqbūlāt are propositions accepted because the hearer trusts the person to whom they are attributed. The acceptance rests especially on confidence in a scholar, specialist, experienced person or trusted guide, not merely on how often a sentence is repeated.
For example, a non-specialist may accept a competent engineer’s advice about a building without having personally checked each technical reason.
Such acceptance still depends on accurate reporting and relevance of expertise. Familiarity with a person’s name is not a guarantee that every claim they make is certain.