7 It is undeniable and indisputable that there is no privity of contract between the first respondent and the appellant and also, there is no tri-partite agreement among the parties obligating the first respondent to discharge the liability of the second respondent for payment towards fuel charges to the appellant. Seemingly, under PPA, there is a clause which provides for submission of invoices/bills of fuel supply and other expenses to the first respondent by the second respondent. But, the said clause, by itself, does not bind the first respondent to make payment to the appellant on behalf of the second respondent for supply of fuel. The purported agreement between the first respondent and the appellant for payment of fuel bills on condition of express consent of the second respondent cannot be relied on for the purpose of securing payment from the first respondent. The said agreement which is based on understanding cannot be enforced by a judicial order. The second respondent is, admittedly, a private party and cannot be held as an instrumentality of State by any stretch of imagination, as contemplated under Article 12 of the Constitution of India. Further, the relief sought in the petition is not against the respondents under any statutory contract executed between the appellant and the second respondent and as such, the appellant is not entitled to any writ or direction in this petition.