A Companion’s conduct may also be treated as constructively marfūʿ where a distinctive feature is not ordinarily determined by personal ijtihād or custom, but would naturally derive from Prophetic teaching or observation.
A specific prescribed pattern in worship differs from a commonplace personal habit. Even here, however, the assessment depends on whether juristic inference is possible and on what other evidence exists.
This principle does not elevate every action of a Companion. It requires distinguishing a religiously specified matter beyond independent determination from a personal action based on judgment or ordinary practice.