There is a lump of flesh in the body, the nature of which is that when it is sound, the entire body is sound, and when it is corrupt, the entire body is corrupt. It is the heart. (Related in Bukhari and Muslim)
Feeling rundown or agitated? Does your life ever feel empty, even though it seems like you have a million things to do? Does the world seem like an ongoing series of difficulties, corruption and tribulation, without a way out?
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