An implicitly marfūʿ report has wording apparently ending with a Companion, yet its content or formula provides an indication of Prophetic origin that would not ordinarily arise from independent opinion alone. Such inference requires careful qualifications.
Reports concerning inaccessible past events, specified future or afterlife matters, or fixed rewards and punishments can sometimes fall in this category. But a credible possibility of transmission from earlier scriptural traditions must be examined when relevant; not every unseen narrative is automatically treated as implicitly Prophetic.
The practical distinction: “A Companion said this” initially describes a Companion-level attribution. The investigator then asks whether the content and other evidence justify classifying it as implicitly Prophetic. That is inference, not explicit wording.