Hadith That Are Not In Contradiction But Extraneous To The Quran
The entire religion is transmitted to us through ijma and tawatur in the form of the Quran and the Sunnah. There are lots of things mentioned in narrations, for example, application of a law, seerah of Prophet Muhammad SAW, words of wisdom, and even those things that are not part of religion. Every narration will have to be understood individually to figure out what it’s relaying.
The ahadith that extend beyond the scope of a subject matter of a Quranic verse are not the same as those that outright contradict the Quranic verses. However, it is noteworthy that all reports were compiled by fallible beings. Consequently, the reports with additional material carry a potential risk of jurisdictional error. Since Quran is the universal scale of authenticity, it confers “knighthood” to other narrations. Suppose that there is a narration referring to the matter of inheritance. If the content of the narration exceeds the clearly stated ahkam of the Quran regarding inheritance, the scholar may review whether the additional content of the narration remains within the bound of other Quranic principles. If nothing is found to grant reasonable legitimacy to the additional content, a scholar or student may cross-reference it with other similar reports/narrations. If they are still unable to synchronise the additional content, they may either avoid commentary until further research/review by fellow colleagues or they may choose to add relevant/short comments to aid their research. Importantly, and in my humble view, the new findings regarding the additional content of the report should be clearly recorded to distinguish it from the primary sources, until evidence is found to the contrary. Such due diligence ensures data integrity for academic purposes and for future reference.