41:8
إِنَّ ٱلَّذِينَ ءَامَنُوا۟ وَعَمِلُوا۟ ٱلصَّـٰلِحَـٰتِ لَهُمْ أَجْرٌ غَيْرُ مَمْنُونٍ
inna alladhīna āmanū waʿamilū l-ṣāliḥāti lahum ajrun ghayru mamnūnin
Those who believe and do good deeds will have a reward that never fails.’
Truly, those who believe (in the Oneness of Allâh, and in His Messenger Muhammad صلى الله عليه وسلم - Islâmic Monotheism) and do righteous good deeds, for them will be an endless reward that will never stop (i.e. Paradise).