Some interpreters combined several disciplines in comprehensive tafsir works: transmission, language, legal inference, theology, and rhetoric. Such breadth offers readers a range of perspectives, but sheer volume of material is not proof that every interpretation is sound.
Each discipline retains its own requirements. Reports need verification, linguistic claims need Arabic evidence, and legal inferences need a full assessment of relevant proofs. Expertise in one field does not automatically confer authority in all others.
Value of synthesis: several dimensions of meaning become visible, provided each claim is assessed according to its proper standard.