ما هي قصة أصحاب الحجر؟

The Companions of Al-Hijr mentioned in Surat Al-Hijr are Thamud, the people of Prophet Salih (peace be upon him). Allah has mentioned their story in several surahs, such as Al-A'raf, Hud, and Ash-Shu'ara. For further details, one can refer to the books of Tafsir and Ibn Kathir's Stories of the Prophets.