[Hasan Al-Basri ((may Allâh have mercy on
him)] said, "The heart becomes corrupt in six
ways:
► committing sins in the hope of repenting,
► seeking knowledge and not applying it,
► practice without ikhlas [i.e. sincerity],
► eating the sustenance of Allah without
appreciating Him,
► not being pleased with Allah's decree and
► burying the dead without learning from
them."