أَمَّا الَّذِينَ امَنُوا وَعَمِلُوا الصَّالِحَاتِAs for those who believe and do righteous good deeds,meaning, their hearts believed in the signs of Allah, and they did as the signs of Allah dictate, i.e. righteous good deeds.فَلَهُمْ جَنَّاتُ الْمَأْوَىfor them are Gardens of Abode,i.e., in which there are dwellings and houses and lofty apartments.نُزُلاًas an entertainment,means, something to welcome and honor a guest,بِمَا كَانُوا يَعْمَلُونَfor what they used to do