The word(s) "believers" appears 326 time(s) in 294 verse(s) in Quran in Muhammad Pickthal translation.

(231) (But now the answer will be): Nay, for My revelations came unto thee, but thou didst deny them and wast scornful and wast among the disbelievers.

(232) Say (O Muhammad, to the disbelievers): Do ye bid me serve other than Allah? O ye fools!

(233) And those who disbelieve are driven unto hell in troops till, when they reach it and the gates thereof are opened, and the warders thereof say unto them: Came there not unto you messengers of your own, reciting unto you the revelations of your Lord and warning you of the meeting of this your Day? they say: Yea, verily. But the word of doom of disbelievers is fulfilled.

(234) Therefor (O believers) pray unto Allah, making religion pure for Him (only), however much the disbelievers be averse -

(235) And when he brought them the Truth from Our presence, they said: Slay the sons of those who believe with him, and spare their women. But the plot of disbelievers is in naught but error.

(236) They say: Came not your messengers unto you with clear proofs? They say: Yea, verily. They say: Then do ye pray, although the prayer of disbelievers is in vain.

(237) Beside Allah? They say: They have failed us; but we used not to pray to anything before. Thus doth Allah send astray the disbelievers (in His guidance).

(238) But their faith could not avail them when they saw Our doom. This is Allah's law which hath ever taken course for His bondmen. And then the disbelievers will be ruined.

(239) Who give not the poor-due, and who are disbelievers in the Hereafter.

(240) When their messengers came unto them from before them and behind them, saying: Worship none but Allah! they said: If our Lord had willed, He surely would have sent down angels (unto us), so lo! we are disbelievers in that wherewith ye have been sent.