﴿ فَلَوْ أَنَّ لَنَا كَرَّةًۭ فَنَكُونَ مِنَ ٱلْمُؤْمِنِينَ ﴾

“Would that we had a second chance [in life], so that we could be among the believers!””

If only we had another turn another return to this world we would have been among those who believe!’ law ‘if only’ here is for the conditional optative to which nakūna ‘we would have been’ constitutes the response.