"The Messenger of Allah used to like to delay the 'Isha', and he disliked sleeping before it, and engaging in conversation after it."  

كَانَ رَسُولُ اللَّهِ ﷺ يَسْتَحِبُّ أَنْ يُؤَخِّرَ الْعِشَاءَ وَكَانَ يَكْرَهُ النَّوْمَ قَبْلَهَا وَالْحَدِيثَ بَعْدَهَا  

"The Messenger of Allah did not sleep before the 'Isha' nor stay up (talking) after it."  

مَا نَامَ رَسُولُ اللَّهِ ﷺ قَبْلَ الْعِشَاءِ وَلاَ سَمَرَ بَعْدَهَا  

"The Messenger of Allah rebuked us for staying up (talking) after the 'Isha'."  

جَدَبَ لَنَا رَسُولُ اللَّهِ ﷺ السَّمَرَ بَعْدَ الْعِشَاءِ قَالَ ابْنُ مَاجَهْ يَعْنِي زَجَرَنَا عَنْهُ نَهَانَا عَنْهُ