Shaykh Al-Fawzān حفظه الله said:
The more the tongue utters speech void of the remembrance of
Allāh, then the harder the heart becomes. Many people waste their time with gossip, with speech that contain no
benefit, and with laughter, play and heedlessness. Verily, this hardens the
heart.
Sharh Kitāb al-Kabā’ir, p. 109
Taken from A Treatise In Condemnation Of The Hardness Of The
Heart, Hikmah Pubs, p. 34 in the
footnote.
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