Bahlool and the Reason for Heavy Sleep

Bahlool was asked, “What causes heavy sleep?” He replied, “It is the lightness of thought. The lighter the thought, the heavier the sleep becomes.”

In this response, Bahlool cleverly suggests that when the mind is free of worry or burden, sleep becomes deep and undisturbed. His answer reflects the idea that a troubled or overactive mind keeps one awake, while a peaceful and light mind allows for restful sleep.