The word(s) "hearts" appears 132 time(s) in 121 verse(s) in Quran in Mohsin Khan translation.

(71) And that those who have been given knowledge may know that it (this Qur'an) is the truth from your Lord, so that they may believe therein, and their hearts may submit to it with humility. And verily, Allah is the Guide of those who believe, to the Straight Path.

(72) And those who give that (their charity) which they give (and also do other good deeds) with their hearts full of fear (whether their alms and charities have been accepted or not), because they are sure to return to their Lord (for reckoning).

(73) Nay, but their hearts are covered from (understanding) this (the Qur'an), and they have other (evil) deeds, besides, which they are doing.

(74) It is He Who has created for you (the sense of) hearing (ears), eyes (sight), and hearts (understanding). Little thanks you give.

(75) Men whom neither trade nor sale (business) diverts from the Remembrance of Allah (with heart and tongue), nor from performing As-Salat (Iqamat-as-Salat), nor from giving the Zakat. They fear a Day when hearts and eyes will be overturned (out of the horror of the torment of the Day of Resurrection).

(76) Is there a disease in their hearts? Or do they doubt or fear lest Allah and His Messenger (صلى الله عليه وسلم) should wrong them in judgement. Nay, it is they themselves who are the Zalimun (polytheists, hypocrites and wrong-doers).

(77) Thus have We caused it (the denial of the Qur'an) to enter the hearts of the Mujrimun (criminals, polytheists, sinners).

(78) Thus does Allah seal up the hearts of those who know not [the proofs and evidence of the Oneness of Allah i.e. those who try not to understand true facts that which you (Muhammad صلى الله عليه وسلم) have brought to them].

(79) Then He fashioned him in due proportion, and breathed into him the soul (created by Allah for that person); and He gave you hearing (ears), sight (eyes) and hearts. Little is the thanks you give!

(80) Allah has not made for any man two hearts inside his body. Neither has He made your wives whom you declare to be like your mothers' backs, your real mothers. [az-Zihar is the saying of a husband to his wife, "You are to me like the back of my mother" i.e. You are unlawful for me to approach], nor has He made your adopted sons your real sons. That is but your saying with your mouths. But Allah says the truth, and He guides to the (Right) Way.