3 verses have
hearts
in Edition Clear Qur'an by Talal Itani / Al-Hujuraat (The Inner Apartments)

49:3Those who lower their voices before God’s Messenger—those are they whose hearts God has tested for piety. They will have forgiveness and a great reward.

49:7And know that among you is the Messenger of God. Had he obeyed you in many things, you would have suffered hardship. But God has given you the love of faith, and adorned it in your hearts, and made disbelief, mischief, and rebellion hateful to you. These are the rightly guided.

49:14The Desert-Arabs say, “We have believed.” Say, “You have not believed; but say, ‘We have submitted,’ for faith has not yet entered into your hearts. But if you obey God and His Messenger, He will not diminish any of your deeds. God is Forgiving and Merciful.”