Amina Inloes, Amina Inloes is originally from the US and has a PhD in Islamic Studies from the University of Exeter on Shi'a hadith. She is the program leader for the MA Islamic Studies program at the... Answer updated 2 years ago

Qur'an 3:184: But if they reject you, so indeed were rejected before you messengers who came with clear arguments (al-bayyinat) and scriptures (al-zubur) and the illuminating book (al-kitab al-munir).

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Bayyinat is said to refer to the signs accompanying or miracles performed by the ancient prophets. It could also refer to their logical arguments.

"Scriptures and the illuminating book" is said to refer to the scriptures and/or religious laws and ordinances transmitted by the ancient prophets. For instance, Tafsir al-Mizan gives as examples the scriptures of Noah and Abraham, and the Torah and Injil. Some exegetes have specific views about which scriptures may be referred to by which phrase and others simply take it as an overarching phrase to refer to ancient scriptures. 

("Zubur" can refer to any scriptures not just the Psalms.)

This interpretation may be due to the fact that it is related that section of the Qur'an was revealed when some Jews came and questioned the Prophet. 

Maybe in the phrase "the illuminating book", there is a hint that all the revelation came from a single divine source, rather than the different scriptures being like books written by different people.