What is the significance of Jinns in Islam?

The Holy Qur'an has been revealed for both humans and Jinns as it says, "Say: If men and Jinn should combine together to bring the like of this Qur'an, they could not bring the like of it, though some of them were aiders of others." (17:88) Several other verses from the Holy Qur'an indicate that worship of Allah is required from both the Jinns and humans.

During the revelation of Sura Jinn, according to a tradition, Ibn Abbas said: "When the Holy Qur'an was revealed, Jinns were prevented from ascending towards the skies and several other prayers. Experiencing this, several Jinns came to Mecca to know the reason behind this abandonment. When they entered, they saw and heard Prophet Muhammad (peace be upon him and his progeny) reciting Qur'anic verses during Fajr prayer. Hearing his beautiful speech, Jinns became influenced by the Holy Prophet."