Indian Evidence Act, 1872
158. What matters may be proved in connection with proved
statement relevant under section 32 or 33
Whenever any
statement, relevant under section 32 or 33, is proved, all matters may be
proved either in order to contradict or to corroborate it, or in order to
impeach or confirm the credit of the person by whom it was made, which might
have been proved if that person had been called as a witness and had denied
upon cross –examination the truth of the matter suggested.