Al-Hujurat 49:14

Qalati al-aAArabu amannaqul lam tu/minoo walakin qooloo aslamna walammayadkhuli al-eemanu fee quloobikum wa-in tuteeAAooAllaha warasoolahu la yalitkum min aAAmalikumshay-an inna Allaha ghafoorun raheem

The bedouins say, "We have believed." Say, "You have not [yet] believed; but say [instead], 'We have submitted,' for faith has not yet entered your hearts. And if you obey Allāh and His Messenger, He will not deprive you from your deeds of anything. Indeed, Allāh is Forgiving and Merciful."

The Bedouins say, “We have come to believe.” Say, “You have not come to believe; instead, you (should) say, ‘We have surrendered’ and the belief has not entered your hearts so far. If you obey Allah and His Messenger, He will not curtail (the reward of) any of your deeds in the least. Surely Allah is Most-Forgiving, Very-Merciful.”