The word(s) "care" appears 86 time(s) in 80 verse(s) in Quran in Muhammad Habib Shakir translation.

(61) But (as for) those who are careful of (their duty to) their Lord, they shall have high places, above them higher places, built (for them), beneath which flow rivers; (this is) the promise of Allah: Allah will not fail in (His) promise.

(62) And those who are careful of (their duty to) their Lord shall be conveyed to the garden in companies; until when they come to it, and its doors shall be opened, and the keepers of it shall say to them: Peace be on you, you shall be happy; therefore enter it to abide.

(63) And when Isa came with clear arguments he said: I have come to you indeed with wisdom, and that I may make clear to you part of what you differ in; so be careful of (your duty to) Allah and obey me:

(64) O you who believe! be not forward in the presence of Allah and His Apostle, and be careful of (your duty to) Allah; surely Allah is Hearing, Knowing.

(65) O you who believe! if an evil-doer comes to you with a report, look carefully into it, lest you harm a people in ignorance, then be sorry for what you have done.

(66) The believers are but brethren, therefore make peace between your brethren and be careful of (your duty to) Allah that mercy may be had on you.

(67) O you who believe! avoid most of suspicion, for surely suspicion in some cases is a sin, and do not spy nor let some of you backbite others. Does one of you like to eat the flesh of his dead brother? But you abhor it; and be careful of (your duty to) Allah, surely Allah is Oft-returning (to mercy), Merciful.

(68) O you men! surely We have created you of a male and a female, and made you tribes and families that you may know each other; surely the most honorable of you with Allah is the one among you most careful (of his duty); surely Allah is Knowing, Aware.

(69) O you who believe! be careful of (your duty to) Allah and believe in His Apostle: He will give you two portions of His mercy, and make for you a light with which you will walk, and forgive you, and Allah is Forgiving, Merciful;

(70) O you who believe! when you confer together in private, do not give to each other counsel of sin and revolt and disobedience to the Apostle, and give to each other counsel of goodness and guarding (against evil); and be careful of (your duty to) Allah, to Whom you shall be gathered together.