Truthful report: a report corresponding to reality.
Mutawātir report: qualified widespread transmission excluding a serious possibility of coordinated falsehood and yielding certainty.
Necessary knowledge: knowledge acquired without having to set out a separate inferential proof.
Tawātur does not license uncritical belief in everything repeated by a crowd. It explains how certain patterns of genuinely independent testimony can exceed ordinary probability. The objections involving solitary reports, conflicting public claims, and apparent variation in immediate knowledge all serve to clarify the relevant standards.
The second category of truthful report concerns a messenger whose truthfulness is established through a miracle. Its epistemic foundation is different from the numerical and social analysis of tawātur, so it warrants separate treatment.