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.
darimi:2764ʿAbdullāh b. Ṣāliḥ > al-Layth > Ibn ʿAjlān > Ḥusayn b. ʿAbdullāh b. ʿUbaydullāh b. ʿAbbās > ʿIkrimah > Ibn ʿAbbās

[Machine] That the Messenger of Allah ﷺ used to encourage to perform the night prayer until he said, "Even if it is only one Rak'ah."  

الدارمي:٢٧٦٤أَخْبَرَنَا عَبْدُ اللَّهِ بْنُ صَالِحٍ قَالَ حَدَّثَنِي اللَّيْثُ قَالَ حَدَّثَنِي ابْنُ عَجْلَانَ عَنْ حُسَيْنِ بْنِ عَبْدِ اللَّهِ بْنِ عُبَيْدِ اللَّهِ بْنِ عَبَّاسٍ عَنْ عِكْرِمَةَ عَنْ ابْنِ عَبَّاسٍ

أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يَرْغَبُ فِي قِيَامِ اللَّيْلِ حَتَّى قَالَ «وَلَوْ رَكْعَةً»