Opening Oaths Of Surah Fajr
هل في ذلك قسم لذي حجر Allah here sarcastically asks the quraysh that they took this oath of hajj that was supposed to make them people of حجر – those people who’s intellect has a restraint in it; emotions and vain desires do not affect it. Then God starts to mention previous nations and it is known that God destroyed them. This can be taken as a warning to quraysh to restore the hajj and stop doing shirk- as the hajj has been referred to in the previous ayaat in the oaths