Holy Quran » AL MAA-IDAH : 61

And when they come to you, they say, "We believe." But they have entered with disbelief [in their hearts], and they have certainly left with it. And Allah is most knowing of what they were concealing.

{ وإذا جاءُوكم } أي مُنَافِقُو اليهود { قالوا آمنا وقد دخلوا } إليكم متلبسين { بالكفر وهم قد خرجوا } من عندكم متلبسين { به } ولم يؤمنوا { والله أعلم بما كانوا يكتمونـ } ـه من النفاق .