Yes, this was settled inRojer Mathew v. South Indian Bank (2019)where a 5-judge SC bench held that the Speaker's certification of a money bill IS subject to judicial review, but with a high threshold. The court referred the broader question to a 7-judge bench.
The key point for UPSC: Article 110 defines money bills, but there's no explicit bar on courts reviewing Speaker's certification. The SC applied the doctrine ofconstitutional moralityto hold it reviewable.
For understanding how such constitutional cases actually travel through the court system — from district courts all the way to SC — I've found ecourtsindia.com useful for tracking real PIL cases and seeing how they're listed and heard.
