Shaddad bin Aws narrated that the Prophet (ﷺ) said:

"The clever person ids the one who subjugates his soul, and works for what is after death. And the incapable is the one who follows his desires and merely hopes in Allah." [He said:] The meaning of his saying: "Who subjugates his soul", is to say the one who reckons with his soul in the world, before he is reckoned with, on the Day of Judgement. It has been related that 'Umar bin Al-Khattäb said: "Reckon with yourselves before you are reckoned with, and prepare for the Greatest Inquisition. The reckoning of the Day of Judgement is only light for the one who reckoned with himself in the world." And, it has been related that Maimun bin Mihran said: "The slave (of Allah) will not be a Taqi until he has reckoned himself, just as he would account for where his business partner got his food and clothing."

حَدَّثَنَا سُفْيَانُ بْنُ وَكِيعٍ، حَدَّثَنَا عِيسَى بْنُ يُونُسَ، عَنْ أَبِي بَكْرِ بْنِ أَبِي مَرْيَمَ، ح وَحَدَّثَنَا عَبْدُ اللَّهِ بْنُ عَبْدِ الرَّحْمَنِ، أَخْبَرَنَا عَمْرُو بْنُ عَوْنٍ، أَخْبَرَنَا ابْنُ الْمُبَارَكِ، عَنْ أَبِي بَكْرِ بْنِ أَبِي مَرْيَمَ، عَنْ ضَمْرَةَ بْنِ حَبِيبٍ، عَنْ شَدَّادِ بْنِ أَوْسٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏"‏ الْكَيِّسُ مَنْ دَانَ نَفْسَهُ وَعَمِلَ لِمَا بَعْدَ الْمَوْتِ وَالْعَاجِزُ مَنْ أَتْبَعَ نَفْسَهُ هَوَاهَا وَتَمَنَّى عَلَى اللَّهِ ‏"‏ ‏.‏ قَالَ هَذَا حَدِيثٌ حَسَنٌ ‏.‏ قَالَ وَمَعْنَى قَوْلِهِ ‏"‏ مَنْ دَانَ نَفْسَهُ ‏"‏ ‏.‏ يَقُولُ حَاسَبَ نَفْسَهُ فِي الدُّنْيَا قَبْلَ أَنْ يُحَاسَبَ يَوْمَ الْقِيَامَةِ ‏.‏ وَيُرْوَى عَنْ عُمَرَ بْنِ الْخَطَّابِ قَالَ حَاسِبُوا أَنْفُسَكُمْ قَبْلَ أَنْ تُحَاسَبُوا وَتَزَيَّنُوا لِلْعَرْضِ الأَكْبَرِ وَإِنَّمَا يَخِفُّ الْحِسَابُ يَوْمَ الْقِيَامَةِ عَلَى مَنْ حَاسَبَ نَفْسَهُ فِي الدُّنْيَا ‏.‏ وَيُرْوَى عَنْ مَيْمُونِ بْنِ مِهْرَانَ قَالَ لاَ يَكُونُ الْعَبْدُ تَقِيًّا حَتَّى يُحَاسِبَ نَفْسَهُ كَمَا يُحَاسِبُ شَرِيكَهُ مِنْ أَيْنَ مَطْعَمُهُ وَمَلْبَسُهُ ‏.‏