Jahannam is the Islamic concept of hell, a place of punishment for those who have rejected faith and committed sinful acts. It is depicted in Islamic texts as a fiery and tormenting realm where the disbelievers and wrongdoers are sent after death, emphasizing the justice of God in the afterlife. Jahannam serves as a contrast to Jannah, or paradise, and reflects the moral accountability that underpins Islamic beliefs about human actions and their consequences.