Surah Al-Mutaffifin, Verse 31

وَإِذَا ٱنقَلَبُوٓاْ إِلَىٰٓ أَهۡلِهِمُ ٱنقَلَبُواْ فَكِهِينَ٣١

wa-idhā inqalabū ilā ahlihimu inqalabū fakihīna

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