Imaam Ibn ul-Qayyim (rahimahullaah) said:
“As for the five things
that corrupt the heart, they are those that are referred to: mixing too much
with people, wishful thinking, being attached to anything other than Allaah,
eating one’s fill, and sleeping. These five are the greatest corrupters of the
heart.”
[Madaarij
al-Saalikeen, 1/453]