The book previously listed mutawātir reports among certain premises. Here it recognizes that reports falling short of the conditions for tawātur may produce probability despite some plurality of transmission.
Several people repeating a single unchecked source do not thereby make a report certain. Reliability, genuine independence and the relevant conditions of transmission matter.
Thus the number of reports is not identical with the epistemic strength of their contents. Their provenance and manner of transmission must be evaluated.