It is narrated from Sayyiduna Abu Huraira (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "The fire of mankind which they kindle is one part out of seventy parts of the fire of Hell (i.e., the fire of Hell is sixty-nine times more intense and severe than this fire)." The people said: "O Messenger of Allah (peace and blessings be upon him)! This fire of the world would have been sufficient (for burning)." He (peace and blessings be upon him) said: "That fire is sixty-nine parts more than this fire."

Sayyiduna Abu Huraira (may Allah be pleased with him) said: Do you think the fire of Hell is red like the fire of this world? It is blacker than tar, and tar is called zift.