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.
nasai-kubra:1521Ismāʿīl b. Masʿūd > Khālid > Shuʿbah > Abū Ṣadaqah > Anas

[Machine] The Messenger of Allah ﷺ used to offer the evening prayer when the twilight disappeared.  

الكبرى للنسائي:١٥٢١أَخْبَرَنَا إِسْمَاعِيلُ بْنُ مَسْعُودٍ عَنْ خَالِدٍ عَنْ شُعْبَةَ عَنْ أَبِي صَدَقَةَ عَنْ أَنَسٍ قَالَ

كَانَ رَسُولُ اللهِ ﷺ «يُصَلِّي الْعِشَاءَ إِذَا غَابَ الشَّفَقُ»