The accusers said, "Then what would be its recompense if you should be liars?"
The Saheeh International Quran Translation
قَالُوا۟ فَمَا جَزَٰٓؤُهُۥٓ إِن كُنتُمْ كَٰذِبِينَThe accusers said, "Then what would be its recompense if you should be liars?"