The Messenger of Allāh (ﷺ) said:

“Indeed in the body is a morsel, that if it is sound then the whole of the body is sound and if it is corrupt, then the whole of the body is corrupt. Isn’t it the heart?”

If this is the case, then how can a Muslim be ignorant with regards to the purification of the heart and the things which corrupt the heart? Our Brother Abū Ḥakīm Bilāl Davis mentions how the hearts of the companions of the Prophet (ﷺ) were cured and purified from corruption and filth and how Allāh replaced that with Tawḥīd. He reminds us of the blessing of Allāh upon us, al-Islām and the obligation which Allāh has placed upon us to check our hearts. He says: “…The purification of the heart is from the fundamental issues of the religion that every single Muslim needs to concern himself with…”