The word(s) "breasts" appears 35 time(s) in 33 verse(s) in Quran in Mohsin Khan translation.

(11) No doubt! They did fold up their breasts, that they may hide from Him. Surely, even when they cover themselves with their garments, He knows what they conceal and what they reveal. Verily, He is the All-Knower of the (innermost secrets) of the breasts.

(12) "And We shall remove from their breasts any deep feeling of bitterness (that they may have). (So they will be like) brothers facing each other on thrones.

(13) Whoever disbelieved in Allah after his belief, except him who is forced thereto and whose heart is at rest with Faith; but such as open their breasts to disbelief, on them is wrath from Allah, and theirs will be a great torment.

(14) "Or some created thing that is yet greater (or harder) in your breasts (thoughts to be resurrected, even then you shall be resurrected)." Then, they will say: "Who shall bring us back (to life)?" Say: "He Who created you first!" Then, they will shake their heads at you and say: "When will that be?" Say: "Perhaps it is near!"

(15) Have they not travelled through the land, and have they hearts wherewith to understand and ears wherewith to hear? Verily, it is not the eyes that grow blind, but it is the hearts which are in the breasts that grow blind.

(16) And verily, your Lord knows what their breasts conceal and what they reveal.

(17) And your Lord knows what their breasts conceal, and what they reveal.

(18) Of mankind are some who say: "We believe in Allah." But if they are made to suffer for the sake of Allah, they consider the trial of mankind as Allah's punishment; and if victory comes from your Lord, (the hypocrites) will say: "Verily we were with you (helping you)." Is not Allah Best Aware of what is in the breasts of the 'Alamin (mankind and jinn).

(19) Nay, but they, the clear Ayat [i.e. the description and the qualities of Prophet Muhammad صلى الله عليه وسلم written in the Taurat (Torah) and the Injeel (Gospel)] are preserved in the breasts of those who have been given knowledge (among the people of the Scriptures). And none but the Zalimun (polytheists and wrongdoers) deny Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.).

(20) And whoever disbelieves, let not his disbelief grieve you (O Muhammad صلى الله عليه وسلم). To Us is their return, and We shall inform them what they have done. Verily, Allah is the All-Knower of what is in the breasts (of men).