It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: Every inhabitant of Hell is shown his expected place in Paradise, and he wishes, "If only Allah had honored me with guidance," and this becomes a cause of regret for him. Similarly, every inhabitant of Paradise is shown his expected place in Hell, and he thinks, "If Allah had not guided me, I would have been here," and then he gives thanks for this.