God did not make any man with two hearts in his body. Nor did He make your wives whom you estrange to be as your mothers. Nor did He make your adopted children to be your sons. Such is what you claim with your mouths, but God speaks the truth, and He guides to the path.
Translation endnotes
[33:4] Reflecting on the context of this verse, which reminds us that reality does not change just because people say something, we can deduce that during the time of revelation some people believed that they had two hearts. The Quran rejects these superstitions. From the implication of the verse we may understand the following too: Heart is a word used for the center of acknowledging the truth, and love. Hearts should be dedicated to the beautiful attributes of God alone. God is the only Lord and Master.