For what amount c form should be issued

Hi. I need to ask on what value C form should be issued. if the seller is calculationg the CST on the Basic amount+Excise duty and while hes taking the refund of Excise duty so hes not charging from the Buyer and so raising the invoice excluding the Excise duty.For eg:- below is the extract ledger of our seller  and hes raising the invoice inclusive of all taxes as on 37,53,569 and in tally we are showing the entry purchase A/c 36,79,970(Dr) + CST 73,599(Dr) = party 37,53,569 (Cr). on what value C form should be isuued. please anyone reply urgently. I have also attached the invoice raised by our seller.