Abu Hurayrah (RA) reported, “A man said to the Prophet (SAW), ‘Advise me.’ The Prophet (SAW) said, ‘Do not get angry.’ The man asked again, and the Prophet (SAW) said, ‘Do not get angry.’” (Imam Bukhari)
Another indication of how terrible that Day will be in the fact that it will be so long. Allah said: “The angels and Jibreel ascend to Him in a Day the measure whereof is fifty thousand years. So be patient (O’ Muhammad), with a good patient. Verily, they see it (the torment) afar off. But we see it (quite) near.” (Al-Ma’arij: 4-7)
The Day of Resurrection will be a Day of Tremendous import and immense horror, the like of which mankind will never have seen. Several things point to the enormity of its terrors. Allah described that Day as being great. His description of it as such is sufficient for us to know that it is more serious than we can ever imagine. He said: “Think they not that they will be resurrected for reckoning, On a Great Day, the Day when all mankind will stand before the Lord of the world.” (Al-Mutaffifin: 4-6)