Sahl b. Sa'd reported it from Messenger of Allah ﷺ that a person performs deeds like the deeds of the people of Paradise apparently before people and he would be amongst the dwellers of Hell and a person acts apparently like the people of Hell, but (in fact) he would be among the dwellers of Paradise. (Using translation from Muslim 112b)
"إِنَّ الرَّجُلَ لَيَعْمَلُ عَمَلَ الْجَنَّةِ - فيمَا يَبْدوُ للنَّاسِ - وَهْوَ مِنْ أهْلِ النَّار، وَإنَّ الرَّجُلَ لَيَعْمَلُ عَمَلَ أهْلِ النَّارِ - فيِمَا يَبْدُو للنَّاسِ - وَهُوَ مِنْ أهلِ الْجَنَّة".