"Janganlah kamu sekalian memperbanyak bicara selain berdzikir kepada Allah, sesungguhnya memperbanyak perkataan tanpa dzikir kepada Allah akan mengeraskan hati, dan sejauh-jauh manusia adalah yang hatinya keras." (HR. Turmudji)
Their similitude is that of a man who kindled a fire; when it lighted all around him, Allah took away their light and left them in utter darkness. So they could not see.
shummun bukmun 'umyun fahum laa yarji'uuna
Deaf, dumb, and blind, they will not return (to the path).
aw kashayyibin mina alssamaa-i fiihi zhulumaatun wara'dun wabarqun yaj'aluuna ashaabi'ahum fii aatsaanihim mina alshshawaa'iqi hadzara almawti waallaahu muhiithun bialkaafiriina
Or (another similitude) is that of a rain-laden cloud from the sky: In it are zones of darkness, and thunder and lightning: They press their fingers in their ears to keep out the stunning thunder-clap, the while they are in terror of death. But Allah is ever round the rejecters of Faith!
The lightning all but snatches away their sight; every time the light (Helps) them, they walk therein, and when the darkness grows on them, they stand still. And if Allah willed, He could take away their faculty of hearing and seeing; for Allah hath power over all things.