The word(s) "best" appears 144 time(s) in 132 verse(s) in Quran in Muhammad Habib Shakir translation.

(121) Who created death and life that He may try you-- which of you is best in deeds; and He is the Mighty, the Forgiving,

(122) Surely your Lord best knows him who errs from His way, and He best knows the followers of the right course.

(123) The best of them said: Did I not say to you, Why do you not glorify (Allah)?

(124) Surely the rising by night is the firmest way to tread and the best corrective of speech.

(125) Surely your Lord knows that you pass in prayer nearly two-thirds of the night, and (sometimes) half of it, and (sometimes) a third of it, and (also) a party of those with you; and Allah measures the night and the day. He knows that you are not able to do it, so He has turned to you (mercifully), therefore read what is easy of the Quran. He knows that there must be among you sick, and others who travel in the land seeking of the bounty of Allah, and others who fight in Allah's way, therefore read as much of it as is easy (to you), and keep up prayer and pay the poor-rate and offer to Allah a goodly gift, and whatever of good you send on beforehand for yourselves, you will find it with Allah; that is best and greatest in reward; and ask forgiveness of Allah; surely Allah is Forgiving, Merciful.

(126) And bestow not favors that you may receive again with increase,

(127) And Allah knows best what they hide,

(128) And accepts the best,

(129) And rejects the best,

(130) Certainly We created man in the best make.