An interim maintenance order pendente lite granted under rule 43 does not constitute an appealable 'decision' as contemplated in s 16(1)(a) of the Superior Courts Act 10 of 2013. Section 16(3) of the Act expressly provides that no appeal lies from any judgment or order in proceedings in connection with an application by one spouse against the other for maintenance pendente lite. The interests of justice, which is the paramount consideration in determining appealability, does not favour entertaining appeals against rule 43 orders because: (1) there is an express statutory bar reflecting a deliberate legislative choice; (2) rule 43 orders are interim, provisional and revisable under rule 43(6) and by the trial court in the final divorce proceedings, thus lacking finality; (3) alternative remedies are available in the high court, including rule 43(6) applications and invocation of the court's inherent powers under s 173 of the Constitution; (4) allowing appeals would undermine the objectives of expedition and affordability that characterize rule 43 proceedings; (5) appeals would create risk of prejudice, particularly to vulnerable spouses and children, and facilitate piecemeal litigation. The grant of leave to appeal, even by two Judges of the Supreme Court of Appeal on petition, cannot confer jurisdiction where the statutory framework and interests of justice deny it. The court's inherent jurisdiction under s 173 of the Constitution cannot be used to assume jurisdiction not conferred by statute.