The word(s) "breast" appears 32 time(s) in 29 verse(s) in Quran in Muhammad Habib Shakir translation.

(21) Nay! these are clear communications in the breasts of those who are granted knowledge; and none deny Our communications except the unjust.

(22) And whoever disbelieves, let not his disbelief grieve you; to Us is their return, then will We inform them of what they did surely Allah is the Knower of what is in the breasts.

(23) If you are ungrateful, then surely Allah is Self-sufficient above all need of you; and He does not like ungratefulness in His servants; and if you are grateful, He likes it in you; and no bearer of burden shall bear the burden of another; then to your Lord is your return, then will He inform you of what you did; surely He is Cognizant of what is in the breasts.

(24) He knows the stealthy looks and that which the breasts conceal.

(25) Surely (as for) those who dispute about the communications of Allah without any authority that has come to them, there is naught in their breasts but (a desire) to become great which they shall never attain to; Therefore seek refuge in Allah, surely He is the Hearing, the Seeing.

(26) And there are advantages for you in them, and that you may attain thereon a want which is in your breasts, and upon them and upon the ships you are borne.

(27) Or do they say: He has forged a lie against Allah? But if Allah pleased, He would seal your heart; and Allah will blot out the falsehood and confirm the truth with His words; surely He is Cognizant of what is in the breasts.

(28) Have We not expanded for you your breast,

(29) And what is in the breasts is made apparent?