The word(s) "heart" appears 169 time(s) in 159 verse(s) in Quran in Muhammad Pickthal translation.

(81) With hearts preoccupied. And they confer in secret. The wrong-doers say: Is this other than a mortal like you? Will ye then succumb to magic when ye see (it)?

(82) That (is the command). And whoso magnifieth the offerings consecrated to Allah, it surely is from devotion of the hearts,

(83) Whose hearts fear when Allah is mentioned, and the patient of whatever may befall them, and those who establish worship and who spend of that We have bestowed on them.

(84) Have they not travelled in the land, and have they hearts wherewith to feel and ears wherewith to hear? For indeed it is not the eyes that grow blind, but it is the hearts, which are within the bosoms, that grow blind.

(85) That He may make that which the devil proposeth a temptation for those in whose hearts is a disease, and those whose hearts are hardened - Lo! the evil-doers are in open schism -

(86) And that those who have been given knowledge may know that it is the truth from thy Lord, so that they may believe therein and their hearts may submit humbly unto Him. Lo! Allah verily is guiding those who believe unto a right path.

(87) And those who give that which they give with hearts afraid because they are about to return unto their Lord,

(88) Nay, but their hearts are in ignorance of this (Qur'an), and they have other works, besides, which they are doing;

(89) He it is Who hath created for you ears and eyes and hearts. Small thanks give ye!

(90) Men whom neither merchandise nor sale beguileth from remembrance of Allah and constancy in prayer and paying to the poor their due; who fear a day when hearts and eyeballs will be overturned;