A Companion specifies an unseen reward for an act without naming the Prophet. What is the technical possibility?

Isnād, Matn, Explicit and Constructive Marfūʿ, and Mawqūf

• It is necessarily weak
• It can be constructively marfūʿ where non-inferability and other conditions are met
• It is necessarily an explicit quotation
• It is always a Successor’s report