Builder asking to submit buyers copy of tpt after closing bank loan

What is TPT copy?

Are you referring to third-party transfer from bank account?

Whatever, if there is a delay by bank to disburse the home loan to the builder then the builder is well within his rights to charge interest for the delayed payment.

If the builder delays handing possession then you go through the conditions of the sale agreement about the penalty clause for this delay and demand penalty from builder by issuing  a legal notice and followed by a complaint before consumer redressal commission.

Yes, Tripartite Agreement (TPT) and PTM (Permission to Mortgage). Why does the builder need a buyer's copy? What should I do?