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

(31) On those who believe and do good there is no blame for what they eat, when they are careful (of their duty) and believe and do good deeds, then they are careful (of their duty) and believe, then they are careful (of their duty) and do good (to others), and Allah loves those who do good (to others).

(32) Lawful to you is the game of the sea and its food, a provision for you and for the travellers, and the game of the land is forbidden to you so long as you are on pilgrimage, and be careful of (your duty to) Allah, to Whom you shall be gathered.

(33) Say: The bad and the good are not equal, though the abundance of the bad may please you; so be careful of (your duty to) Allah, O men of understanding, that you may be successful.

(34) O you who believe! take care of your souls; he who errs cannot hurt you when you are on the right way; to Allah is your return, of all (of you), so He will inform you of what you did.

(35) This is more proper in order that they should give testimony truly or fear that other oaths be given after their oaths; and be careful of (your duty to) Allah, and hear; and Allah does not guide the transgressing people.

(36) When the disciples said: O Isa son of Marium! will your Lord consent to send down to us food from heaven? He said: Be careful of (your duty to) Allah if you are believers.

(37) And that you should keep up prayer and be careful of (your duty to) Him; and He it is to Whom you shall be gathered.

(38) They ask you about the windfalls. Say: The windfalls are for Allah and the Apostle. So be careful of (your duty to) Allah and set aright matters of your difference, and obey Allah and His Apostle if you are believers.

(39) O you who believe! If you are careful of (your duty to) Allah, He will grant you a distinction and do away with your evils and forgive you; and Allah is the Lord of mighty grace.

(40) Eat then of the lawful and good (things) which you have acquired in war, and be careful of (your duty to) Allah; surely Allah is Forgiving, Merciful.