The Messenger of Allah (sal Allahu alaihi wa sallam) said: "The momin dies with his sweat on his brow (i.e. with labour and hard work)." [Tirmidhi, Nasai]
A momin's work is never done. If a conscientious student is sitting for a three hour exam and gets done in two and a half hours, he/she will go over their work making sure that they did not miss anything or make any mistakes. Moreover, if an exam has been designed for three hours, it is meant to take around three hours to finish.
Our lifespan should likewise be fully utilized to make sure we have not left anything undone that we could have earned Jannat with. This is the only chance we get; there will be no exams after this, only results. Therefore, we have to give this one exam our best shot.
If somebody is sitting around with nothing to do, it means that they have not understood the purpose of life, what Allah (subhana wa ta'ala) gave it to us for! There is no time to waste, no moment to lose. As long as we are alive we can keep earning sawaab. A momin, therefore, keeps working to please Allah (subhana wa ta'ala) before death overtakes him, and his exam paper is taken away from him.
http://dailyhadith.adaptivesolutionsinc.com
Rasul Allah (sal Allahu alaihi wa sallam) said: “On the Day of Resurrection death will be brought forward in the shape of a black and white ram. Then a call maker will call, ‘O people of Jannah!’ Thereupon they will stretch their necks and look carefully. The caller will say, ‘Do you know this?’ They will say, ‘Yes, this is death.’ By then all of them will have seen it. Then it will be announced again, ‘O people of Jahannum!’ They will stretch their necks and look carefully. The caller will say, ‘Do you know this?’ They will say, ‘Yes, this is death.’ And by then all of them will have seen it. Then it (that ram) will be slaughtered and the caller will say, ‘O people of Jannah! Eternity for you and no death. O people of Jahannum! Eternity for you and no death.’” Then the Prophet (sal Allahu alaihi wa sallam) recited: “And warn them of the Day of Distress when the case has been decided, while (now) they are in a state of carelessness (i.e. the people of the world) and they do not believe. (Quran 19:39)” [Sahih Bukhari]
After people have reached their places in Jannah or the Fire Allah (subhana wa ta’ala) will destroy death. Nobody will ever die again after this. This eternal life will be a source of great joy for the people in Jannah. But the people in Jahannum will wish for one thing from the bottom of their heart: death, if only they could cease to exist then they would not feel the punishment that is now their due. They will not wish for any of the things they wished for in the world, because of which they disobeyed and ignored Allah (subhana wa ta’ala) and the warnings of His Messengers. They will not want eternal life, they will not want Jannah. All they will want is to die. And it will be denied them. This is really scary if we think about it.
