Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
quran:80:37 –

For every man, that Day, will be a matter adequate for him.  

every person that day will have a matter to preoccupy him, a predicament to distract him from the affairs of others, in other words, every person will be preoccupied with his own self.
القرآن:٨٠:٣٧ –

لِكُلِّ امْرِئٍ مِنْهُمْ يَوْمَئِذٍ شَأْنٌ يُغْنِيهِ  

{لكل امرىءٍ منهم يومئذ شأن يغنيه} حال يشغله عن شأن غيره، أي اشتغل كل واحد بنفسه.