and when they come to you they say we believe. but they have entered with disbelief and they have certainly left with it. and allah is most knowing of what they were concealing.
وإذا جاءوكم قالوا آمنا وقد دخلوا بالكفر وهم قد خرجوا به والله أعلم بما كانوا يكتمون