The word(s) "believer" appears 651 time(s) in 556 verse(s) in Quran in Mohsin Khan translation.

(261) The Day when the Trumpet will be blown (the second blowing): that Day, We shall gather the Mujrimun (criminals, polytheists, sinners, disbelievers in the Oneness of Allah) blue or blind-eyed with thirst.

(262) And he who works deeds of righteousness, while he is a believer (in Islamic Monotheism), then he will have no fear of injustice, nor of any curtailment (of his reward).

(263) And strain not your eyes in longing for the things We have given for enjoyment to various groups of them (polytheists and disbelievers in the Oneness of Allah), the splendour of the life of this world, that We may test them thereby. But the provision (good reward in the Hereafter) of your Lord is better and more lasting.

(264) Say (O Muhammad صلى الله عليه وسلم): "Each one (believer and disbeliever.) is waiting, so wait you too; and you shall know who are they that are on the Straight and Even Path (i.e. Allah's religion of Islamic Monotheism), and who are they that have let themselves be guided (on the Right Path).

(265) Then We fulfilled to them the promise. So We saved them and those whom We willed, but We destroyed Al-Musrifun (i.e. disbelievers in Allah, in His Messengers, extravagants, transgressors of Allah's limits by committing crimes, oppressions, polytheism and sins).

(266) They cried: "Woe to us! Certainly we have been Zalimun (polytheists, wrong-doers and disbelievers in the Oneness of Allah)."

(267) So We answered his call, and delivered him from the distress. And thus We do deliver the believers (who believe in the Oneness of Allah, abstain from evil and work righteousness).

(268) So whoever does righteous good deeds while he is a believer (in the Oneness of Allah - Islamic Monotheism), his efforts will not be rejected. Verily We record it for him (in his Book of deeds).

(269) And the true promise (Day of Resurrection) shall draw near (of fulfillment). Then (when mankind is resurrected from their graves), you shall see the eyes of the disbelievers fixedly staring in horror. (They will say): "Woe to us! We were indeed heedless of this - nay, but we were Zalimun (polytheists and wrong-doers)."

(270) Certainly you (disbelievers) and that which you are worshipping now besides Allah, are (but) fuel for Hell! (Surely), you will enter it.