courts should avoid issuing a writ of preliminary injunction which would in effect dispose of the main case without trial.

The prevailing rule is that courts should avoid issuing a writ of preliminary injunction which would in effect dispose of the main case without trial. (Rivas v. Securities and Exchange Commission, 190 SCRA 295 [1990]; Government Service and Insurance System v. Florendo, 178 SCRA 76 [1989]; and Ortigas & Co. Ltd. Partnership v. Court of Appeals, 162 SCRA 165 [1988]) In the case at bar, if the lower court issued the desired writ to enjoin the sale of the properties premised on the aforementioned justification of the petitioners, the issuance of the writ would be a virtual acceptance of their claim that the foreclosure sale is null and void. (See Ortigas and Co., Ltd. Partnership v. Court of Appeals, supra). There would in effect be a prejudgment of the main case and a reversal of the rule on the burden of proof since it would assume the proposition which the petitioners are inceptively bound to prove.²⁴ (Emphasis supplied)