parte order of injunction was being passed in the facts and circumstances of a particular case. In this background, the requirement for recording the reasons for grant of ex parte injunction, cannot be held to be a mere formality. This requirement is consistent with the principle, that a party to a suit, who is being restrained from exercising a right which such party claims to exercise either under a statute or under the common law, must be informed why instead of following the requirement of Rule 3, the procedure prescribed under the proviso has been followed. The party which invokes the jurisdiction of the court for grant of an order of restraint against a party, without affording an opportunity to him of being heard, must satisfy the court about the gravity of the situation and court has to consider briefly these factors in the ex parte order. We are quite conscious of the fact that there are other statutes which contain similar provisions requiring the court or the authority concerned to record reasons before exercising power vested in them. In respect of some of such provisions it has been held that they are required to be complied with but non-compliance therewith will not vitiate the order so passed. But same cannot be said in respect of the proviso to Rule 3 of Order 39. The Parliament has prescribed a particular procedure for passing of an order of injunction without notice to the other side, under exceptional circumstances. Such ex parte orders have far-reaching effect, as such a condition has been imposed that court must record reasons before passing such order. If it is held that the compliance with the proviso aforesaid is optional and not obligatory, then the introduction of the proviso by the Parliament shall be a futile exercise and that part of Rule 3 will be a surplusage for all practical purposes. Proviso to Rule 3 of Order 39 of the Code, attracts the principle, that if a statute requires a thing to be done in a particular manner, it should be done in that manner or not all. This principle was approved and accepted in well-known cases of Taylor v. Taylor [(1875) 1 Ch D 426 : 45 LJ Ch 373] and Nazir Ahmed v. Emperor [AIR 1936 PC 253 (2) : 63 IA 372 :