If assets are classified based on their physical existence, assets are classified as either tangible assets or intangible assets.

• Tangible Assets. Tangible assets are assets with physical existence (we can touch, feel, and see them). ...
• Intangible Assets. Intangible assets are assets that lack physical existence.

آمال آل حيدر

Given the rather outmoded status of available Quranic interpretations, I think the most important asset an interpreter should have is the ability and willingness to approach Quran with an open mind that can draw clear lines between textual evidence and hearsay.