Applicability of section 68 of Income Tax Act

You have misunderstood the provision

Section 68 will be hit when there is unexplained cash credit in the books of the assessee. Ex: Rs 5 lakhs credited in bank account and assessee unable explain the source of income, then section 68 will be applicable. In your case, it is disallowance of expenditure.

So can AO make an addition as a unexplained cash credit in the above given case i.e. bogus credit purchase transaction under section 68?