the bedouin arabs have said we are believers. tell them you are not believers but you should say that you are muslims. in fact belief has not yet entered your hearts. if you obey god and his messenger nothing will be reduced from your deeds. god is allforgiving and allmerciful.
قالت الأعراب آمنا قل لم تؤمنوا ولكن قولوا أسلمنا ولما يدخل الإيمان في قلوبكم وإن تطيعوا الله ورسوله لا يلتكم من أعمالكم شيئا إن الله غفور رحيم