The word(s) "belief" appears 136 time(s) in 116 verse(s) in Quran in Mohsin Khan translation.

(101) But [Fir'aun (Pharaoh)] turned away (from belief in might) along with his hosts, and said: "A sorcerer, or a madman."

(102) Have they (the people of the past) transmitted this saying to these (Quraish pagans)? Nay, they are themselves a people transgressing beyond bounds (in disbelief)!

(103) Or did they create the heavens and the earth? Nay, but they have no firm belief.

(104) And instead (of thanking Allah) for the provision He gives you, you deny (Him by disbelief)!

(105) He it is Who sent among the unlettered ones a Messenger (Muhammad صلى الله عليه وسلم) from among themselves, reciting to them His Verses, purifying them (from the filth of disbelief and polytheism), and teaching them the Book (this Qur'an, Islamic laws and Islamic jurisprudence) and Al-Hikmah (As-Sunnah: legal ways, orders, acts of worship of Prophet Muhammad صلى الله عليه وسلم). And verily, they had been before in manifest error;

(106) Has not the news reached you of those who disbelieved aforetime? And so they tasted the evil result of their disbelief, and theirs will be a painful torment.

(107) So it tasted the evil result of its affair (disbelief), and the consequence of its affair (disbelief) was loss (destruction in this life and an eternal punishment in the Hereafter).

(108) (And has also sent to you) a Messenger (Muhammad صلى الله عليه وسلم), who recites to you the Verses of Allah (the Qur'an) containing clear explanations, that He may take out those who believe and do righteous good deeds, from the darkness (of polytheism and disbelief) to the light (of Islamic Monotheism). And whosoever believes in Allah and performs righteous good deeds, He will admit him into Gardens under which rivers flow (Paradise) to dwell therein forever. Allah has indeed granted for him an excellent provision.

(109) Go to Fir'aun (Pharaoh); verily he has transgressed all bounds (in crimes, sins, polytheism, disbelief).

(110) And say to him: "Would you purify yourself (from the sin of disbelief by becoming a believer)?"