Request solution for query under sec.40a(3) income tax act

Anand Mohan (Proprietor) (55 Points)

07 April 2016  
Sir/madam, Whether under sec.40A(3) of the Income tax Act in case an assessee square off his amount of purchases payable to party "Y" against the amount due from party "Z" for sales made, this square off will be disallowed treating as expenditure otherwise than through account payee cheque or it will be allowed as purchase expenditure without any hassles. Any case law may please be quoted.