In the seventh episode of this series, Shaykh Abdullah Misra covers four hadiths from Kitab al-Riqaq, which convey the cure to a hard heart and provide a means to reach Allah Most High.
The first hadith contrasts spiritual slavery, or slavery of the heart, to physical slavery, with the former being the worst type of slavery. In the second hadith, the Beloved Messenger (Allah bless him and give him peace) compares the kind of harm two wolves could inflict on a flock of sheep with the harm that greed for wealth and prestige can do to human hearts.
The third hadith informs that intention to spend and earn from lawful sources is an act of worship that is rewarded. The fourth hadith explains why spending on needs while avoiding extravagance is on the path of gaining the pleasure of Allah Most High. Indeed, the Prophet (Allah bless him and give him peace) was given the gift of true eloquence, characterized by the brevity of speech in combination with a multitude of meanings.