the other party filed an application to refer the dispute to an Arbitrator, the requirement under Section 8 (2) of the Act is not imperative. If the certified copy or original agreement is not on record, then the requirement of Section 8 (2) of the Act is mandatory. What the court, prima facie has to see at the stage of Section 8 of the Act is whether there is any arbitration clause in the agreement or not. When original agreement is filed, it is primary evidence within the meaning of Section 62 of the Indian Evidence Act, 1872, and when certified copy is filed, it is secondary evidence within the meaning of Section 63 of the Act. At first sight or on first appearance, the judicial authority has to satisfy whether there is any clause in the agreement which is sufficient to establish fact. The fact is with regard to existence of arbitration clause so that the judicial authority can refer to an Arbitrator. For that purpose, either of the parties is required to file the original or certified copy of the Development Agreement into the court. If the certified copy is not already available on record, then Section 8 (2) of the Act, 1996, in our considered opinion, is mandatory. Therefore, in the factual back ground of the case, we hold that since the respondents/plaintiffs themselves filed certified copy of the Development Agreement-cum-General Power of Attorney dated 29.08.2007 in the trial court before filing the application under Section 8 (2) of the Act, 1996 by the petitioner/defendant, there is no need for the