Interpration of instruments/documents -Where the language employed in the instrument is clear and unambiguous, the common literary meaning ought to be assigned in interpreting the same and one should not fall back on any other inference. Only the expression in clear words contained in the instrument/document must be considered and not the surrounding circumstances. In short, literal construction must be considered first, rather than going into the intention behind what is said in the instrument/document if the language of the instrument is clear and unambiguous.