The word(s) "believe" appears 1522 time(s) in 1179 verse(s) in Quran in Mohsin Khan translation.

(101) Verily, among mankind who have the best claim to Ibrahim (Abraham) are those who followed him, and this Prophet (Muhammad صلى الله عليه وسلم) and those who have believed (Muslims). And Allah is the Wali (Protector and Helper) of the believers.

(102) O people of the Scripture! (Jews and Christians): "Why do you disbelieve in the Ayat of Allah, [the Verses about Prophet Muhammad صلى الله عليه وسلم present in the Taurat (Torah) and the Injeel (Gospel)] while you (yourselves) bear witness (to their truth)."

(103) And a party of the people of the Scripture say: "believe in the morning in that which is revealed to the believers (Muslims), and reject it at the end of the day, so that they may turn back.

(104) And believe no one except the one who follows your religion. Say (O Muhammad صلى الله عليه وسلم): "Verily! Right guidance is the Guidance of Allah" and do not believe that anyone can receive like that which you have received, otherwise they would engage you in argument before your Lord. Say (O Muhammad صلى الله عليه وسلم): "All the bounty is in the Hand of Allah; He grants to whom He wills. And Allah is All-Sufficient for His creatures' needs, All-Knower."

(105) Nor would he order you to take angels and Prophets for lords (gods) . Would he order you to disbelieve after you have submitted to Allah's Will? (Tafsir At-Tabari).

(106) And (remember) when Allah took the Covenant of the Prophets, saying: "Take whatever I gave you from the Book and Hikmah (understanding of the Laws of Allah), and afterwards there will come to you a Messenger (Muhammad صلى الله عليه وسلم) confirming what is with you; you must, then, believe in him and help him." Allah said: "Do you agree (to it) and will you take up My Covenant (which I conclude with you)?" They said: "We agree." He said: "Then bear witness; and I am with you among the witnesses (for this)."

(107) Say (O Muhammad صلى الله عليه وسلم): "We believe in Allah and in what has been sent down to us, and what was sent down to Ibrahim (Abraham), Isma'il (Ishmael), Ishaq (Isaac), Ya'qub (Jacob) and Al-Asbat [the offspring of the twelve sons of Ya'qub (Jacob)] and what was given to Musa (Moses), 'Îsa (Jesus) and the Prophets from their Lord. We make no distinction between one another among them and to Him (Allah) we have submitted (in Islam)."

(108) How shall Allah guide a people who disbelieved after their belief and after they bore witness that the Messenger (Muhammad صلى الله عليه وسلم) is true and after clear proofs had come unto them? And Allah guides not the people who are Zalimun (polytheists and wrong-doers).

(109) Verily, those who disbelieved after their Belief and then went on increasing in their disbelief (i.e. disbelief in the Qur'an and in Prophet Muhammad صلى الله عليه وسلم) - never will their repentance be accepted [because they repent only by their tongues and not from their hearts]. And they are those who are astray.

(110) Verily, those who disbelieved, and died while they were disbelievers, the (whole) earth full of gold will not be accepted from anyone of them even if they offered it as a ransom . For them is a painful torment and they will have no helpers.