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.
ahmad-zuhd:2211ʿAbdullāh > Abū ʿAbdullāh al-Sulamī > Ḍamrah > ʿUmar b. al-Ward > Lī ʿAṭāʾ In Āstaṭaʿt

[Machine] "To be alone with yourself on the night of Arafah, then do it."  

الزهد لأحمد:٢٢١١حَدَّثَنَا عَبْدُ اللَّهِ حَدَّثَنِي أَبُو عَبْدِ اللَّهِ السُّلَمِيُّ حَدَّثَنَا ضَمْرَةُ عَنْ عُمَرَ بْنِ الْوَرْدِ قَالَ قَالَ لِي عَطَاءٌ «إِنْ اسْتَطَعْتَ

أَنْ تَخْلُوَ بِنَفْسِكَ عَشِيَّةَ عَرَفَةَ فَافْعَلْ»