ENOfficial
Ibn ‘Abbas said that God’s Messenger prolonged the recitation of the Qur’an in the two rak'as after the sunset prayer till the people in the mosque separated. Abu Dawud transmitted it.
Source: sunnah.com
Other translations
Arabic
وَعَنِ ابْنِ عَبَّاسٍ قَالَ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يُطِيلُ الْقِرَاءَةَ فِي الرَّكْعَتَيْنِ بَعْدَ الْمَغْرِبِ حَتَّى يَتَفَرَّقَ أَهْلُ الْمَسْجِدِ. رَوَاهُ أَبُو دَاوُد
sunnah.com