Indian Evidence Act, 1872
93. Exclusion of evidence to explain or amend ambiguous
document
When the language used
in a document is, on its face, ambiguous or defective, evidence may not be given
of facts which would show its meaning or supply its defects.
Illustrations
(a) A agrees, in
writing, to sell a horse to B for "Rs. 1,000 or Rs. 1,500".
Evidence cannot be
given to show which price was to be given.
(b) A deed contains
blanks. Evidence cannot be given of facts which would show how they were meant
to be filled.