Hardening of the Heart

Transcript of a lecture Darul Arqam, Singapore, 26th November 1998.
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The Prophet Muhammad sallallahu `alayhi wa sallam informed us in a very famous tradition, commonly quoted with reference to halal and haram, about the importance of the heart. He said :
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"There is in the body a clump of flesh - if it becomes good, the whole body becomes good and if it becomes bad, the whole body becomes bad. And indeed it is the heart."