Say: Allah knows best how long they remained; to Him are (known) the unseen things of the heavens and the earth; how clear His sight and how clear His hearing! There is none to be a guardian for them besides Him, and He does not make any one His associate in His Judgment.

And when We turned towards you a party of the jinn who listened to the Quran; so when they came to it, they said: Be silent; then when it was finished, they turned back to their people warning (them).