Surah Al-Mutaffifin, ayah 31

وَإِذَا ٱنقَلَبُوٓاْ إِلَىٰٓ أَهۡلِهِمُ ٱنقَلَبُواْ فَكِهِينَ ٣١

Wa idhanqalabū ilā ahlihimunqalabū fakihīn

And when they returned to their people, they would return jesting.