مُسْنَدُ أَحْمَدَ
Musnad Ahmad 3580
Musnad of Abdullah bin Mas'ood
It was narrated that ‘Abdullah (رضي الله عنه) said: The Messenger of Allah (ﷺ) said: "Staying up after the prayer - i.e., ‘Isha' prayer - is only for two men: one who is praying or one who is travelling.”
Musnad Ahmad 3603A hasan hadeeth; this is a da’eef isnad]