5:61
وَاِذَا جَٓاؤُ𐻿كُمْ قَالُٓوا اٰمَنَّا وَقَدْ دَخَلُوا بِالْكُفْرِ وَهُمْ قَدْ خَرَجُوا بِهٖؕ وَاللّٰهُ اَعْلَمُ بِمَا كَانُوا یَكْتُمُونَ
Waitha jaookum qaloo amanna waqad dakhaloo bialkufri wahum qad kharajoo bihi waAllahu aAAlamu bima kanoo yaktumoona
Translations
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
Saheeh International
When they come unto you (Muslims), they say: We believe; but they came in unbelief and they went out in the same; and Allah knoweth best what they were hiding
Marmaduke Pickthall