عَنْ عَائِشَةَ قَالَتْ مَا نَامَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَبْلَ الْعِشَاءِ وَلَا سَمَرَ بَعْدَهَا
It is narrated from Sayyidah Aisha (may Allah be pleased with her) that the Messenger of Allah (peace and blessings be upon him) would not sleep before the Isha prayer, nor would he engage in conversation after the Isha prayer.