﴿ وَإِذَا ٱنقَلَبُوٓا۟ إِلَىٰٓ أَهْلِهِمُ ٱنقَلَبُوا۟ فَكِهِينَ ﴾

“and whenever they return to people of their own kind, they return full of jests;”

and when they returned to their folks they would return blithely fākihīna a variant reading has fakihīna rejoicing in their disparaging mention of the believers;