انَّ النَّبيَّ صلى اللَّه عليه وسلم خَطَبَ يَوْماً فَقَالَ في خِطْبَتِهِ : " أَلاَ إِنَّ الدُّنْيَا عَرَضٌ حَاضِرٌ يأكُلُ مِنْهَا الْبرّ والْفَاجر ألاَ وإنّ الآخِرَةَ أجلٌ صَادِقٌ يَقْضِي فِيهاَمَلِكٌ قَادِرٌ ألاَ وإنَّ الْخَيْرَ كُلَّه بِحَذَافِيرهِ في الْجنَّةِ ألاَ وإنَّ الْشّرَ كُلَّه بِحَذَافِيرهِ في النّارِ ألاَ فاعْلَمُوا وأنْتُمْ مِنَ اللَّهِ عَلَى حَذر واعْلَموا أنَّكُمْ مُعْرَضون عَلَى أعمَالكم فَمَنْ يَعْمَلْ مِثْقَالَ ذَرَّة خَيْراً يَرَه وَمَنْ يَعْمَلْ مِثْقَالَ ذَرَّةٍ شَرَّا يَرَه "

Hadrat Umar R.A narrates that Rasulullah Salallahu Alaihi Wasallam had delivered a Khutbah one day and said, “Beware, worldly possessions are temporary.” The good and the evil eat from it, whereas the hereafter has an appointed time with certainty. In the hereafter the king that has full authority over all things (Allah Ta'ala) will rule and pass judgement. Beware; all types of goodness in its different forms are in Jannat whilst all difficulties in its different forms are in Jahannam. Carry out your deeds and fear Allah Ta'ala, and remember that you will be presented before Allah Ta'ala with all your actions. Any person that carries out good deeds equivalent to an atoms weight will be rewarded, whilst a person that carries out of evil equivalent to an atoms weight will be punished.