«فإن وافق الخبر القياس فلا خفاء في لزوم العمل به، وإن خالفه كان العمل بالقياس أولى»
Where the report accords with analogy, acting upon it is unproblematic. Where they conflict, the particular view reported here gives analogy precedence.
This is a qualified, disputed juristic method, not a license to reject hadith whenever someone thinks another ruling more plausible. The explanation offered is that a transmitter not known for legal interpretation may be more susceptible to conveying wording without capturing an unusual legal meaning.
It requires careful examination of the report, whether a genuine conflict exists, and the scope of the doctrine within the relevant school.