Dismissal of suit where plaintiff after summons returned unserved, fails for seven days to apply for fresh summons

5. Dismissal of suit where plaintiff after summons returned unserved, fails for [seven days] to apply for fresh summons. — [(1) Where after a summons has been issued to the defendant, or to one of several defendants, and returned unserved, the plaintiff fails, for a period of [seven days] from the date of the return made to the Court by the officer ordinarily certifying to the Court returns made by the serving officers, to apply for the issue of a fresh summons the Court shall make an order that the suit be dismissed as against such defendant, unless the plaintiff has within the said period satisfied the Court that—
(a) he has failed after using his best endeavours to discover the residence of the defendant, who has not been served, or
(b) such defendant is avoiding service of process, or
(c) there is any other sufficient cause for extending the time, in which case the Court may extend the time for making such application for such period as it thinks fit.]
(2) In such case the plaintiff may (subject to the law of limitation) bring a fresh suit.