﴿ قُلْ أَنفِقُوا۟ طَوْعًا أَوْ كَرْهًۭا لَّن يُتَقَبَّلَ مِنكُمْ ۖ إِنَّكُمْ كُنتُمْ قَوْمًۭا فَٰسِقِينَ ﴾

“Say: "You may spend [anything], willingly-or unwillingly, [pretending that you do it for the sake of God:] it shall never be accepted from you -for, verily, you are people bent on iniquity!"”

Say ‘Expend in obedience to God willingly or unwillingly it what you expend shall not be accepted from you; you are surely a wicked folk’ the imperative statement here also functions as a predicate.