Causes of the Expansion of the Chest and Happiness in This World

Question:
This questioner, Honorable Shaykh, says: What are the causes of the expansion of the chest, and where is happiness found in this world?

Answer:
In the name of Allah, the Most Gracious, the Most Merciful. Praise be to Allah, and may blessings and peace be upon the Messenger of Allah. Allah the Exalted said: And Musa (peace be upon him). When Allah sent him to Pharaoh , and Allah, Glorious and Exalted is He, said to our Prophet Muhammad (peace and blessings be upon him): "Have We not expanded for you your chest?" From the perspective of possibility, it is upon him by that, that Allah expanded his chest for him. And the expansion of the chest is the breadth of the chest, and its engagement with the truth, and its delight in it, unlike the one whose chest is constricted, for he does not accept the truth. Allah, Glorious and Exalted is He, said: "And whoever wants to misguide him, He makes his chest constricted and narrow, as if he were climbing up to the sky."
And the causes of the expansion of the chest are turning toward good and desiring it, which is sweet and pleasant. Turning toward worship, and reflecting upon the Qur'an; the greatest thing is reflecting upon the Qur'an, for the one who reflects upon the Qur'an finds his chest expanded and desires good. So the greatest of the causes of the expansion of the chest is reflecting upon this great Qur'an. And likewise, from the perspective of the expansion of the chest is supplication; a person supplicates to his Lord, just as Musa (peace be upon him) supplicated, so And among the causes of the expansion of the chest is righteous deeds. Righteous deeds, for righteous deeds expand the chest, unlike sins and evil deeds, for they constrict the chest.
And among the causes of the expansion of the chest is increasing the remembrance of Allah, the glorification, the exaltation, the magnification, and the recitation of the Qur'an. Allah the Exalted said:
And among the greatest causes of the expansion of the chest is the preservation of the five daily prayers. . The five daily prayers expand the chest. For this reason, the Prophet (peace and blessings be upon him), when matters became difficult for him and things other than what was expected occurred, would turn to prayer and find relief through it from the worries of this world. Yes.