AL MAA-IDAH — Ayat 61

وَإِذَا جَآؤُوكُمْ قَالُوَاْ آمَنَّا وَقَد دَّخَلُواْ بِالْكُفْرِ وَهُمْ قَدْ خَرَجُواْ بِهِ وَاللّهُ أَعْلَمُ بِمَا كَانُواْ يَكْتُمُونَ

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.