"And when they returned," meaning the polytheists, "to their own people" in this world, "they returned jesting," meaning: joyful.
﴿وَإِذا انقلبوا﴾ يَعْنِي: الْمُشْركين ﴿إِلَى أهلهم﴾ فِي الدُّنْيَا ﴿انقلبوا فاكهين﴾ أَي: مسرورين
