The Prophet (SAWA) said, 'There is no need to stay up at night past the last Aisha prayer except in the case of two people: the person performing prayers, and the traveller.
رسولُ اللهِ (صَلَّيَ اللهُ عَلَيهِ وَ آلِهِ): لا سَهَرَ بعدَ العِشاءِ الآخِرَةِ إلّا لأِحَدِ رَجُلَينِ: مُصَلٍّ أو مُسافِرٍ.
Similar narrations
Al-Khiṣāl #239"None should remain awake after ʿIshāʾ prayers except either of two men: the one praying or the traveller."