(Fuswilath) 41 : 8
إِنَّ الَّذِينَ آمَنُوا وَعَمِلُوا الصَّالِحَاتِ لَهُمْ أَجْرٌ غَيْرُ مَمْنُونٍ
Indeed those who believe and do righteous deeds, have uninterrupted reward.
The righteous deed is to propagate Adhikr, which is the Food, Cloth, and Sight of the human soul, to all mankind. ‘They have an uninterrupted reward’ means they have plenty of rewards that will never end. See explanation 9: 71-72; 25: 68-70; 84: 25; 95: 6.