«مِنَ السُّنَّةِ كَذَا»
“Such-and-such is part of the Sunnah.”
When said by a Companion, the phrase is commonly treated by hadith critics as pointing to Prophetic Sunnah and therefore carrying constructive elevation. Some scholars nevertheless debated whether every use must refer specifically to the Prophet’s practice or might describe another established precedent.
The speaker’s generation and the wording’s context consequently matter. A Companion’s use is not automatically equivalent to an otherwise identical expression by a Successor; the technical inference cannot be made solely from the dictionary meaning of “sunnah.”