Sura al-Ḥujurāt 49:14

قَالَتِ ٱلْأَعْرَابُ ءَامَنَّا قُل لَّمْ تُؤْمِنُوا۟ وَلَٰكِن قُولُوٓا۟ أَسْلَمْنَا وَلَمَّا يَدْخُلِ ٱلْإِيمَٰنُ فِى قُلُوبِكُمْ وَإِن تُطِيعُوا۟ ٱللَّـهَ وَرَسُولَهُۥ لَا يَلِتْكُم مِّنْ أَعْمَٰلِكُمْ شَيْـًٔا إِنَّ ٱللَّـهَ غَفُورٌ رَّحِيمٌ

qālati l-aʿrābu āmannā qul lam tūʾminū wa-lākin qūlū aslamnā wa-lammā yadkhuli l-īmānu fī qulūbikum wa-in tuṭīʿū allāha wa-rasūlahu lā yalitkum min aʿmālikum shayʾan inna allāha ghafūrun raḥīmun

The desert Arabs say, "We believe." Say, "Ye have no faith; but ye (only)say, 'We have submitted our wills to Allah,' For not yet has Faith entered your hearts. But if ye obey Allah and His Messenger, He will not belittle aught of your deeds: for Allah is Oft-Forgiving, Most Merciful."