'Amr b. al-'As reported Allah's Messenger (ﷺ) as saying:He Is successful who has accepted Islam, who has been provided with sufficient for his want and been made contented by Allah with what He has given him.
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا أَبُو عَبْدِ الرَّحْمَنِ الْمُقْرِئُ، عَنْ سَعِيدِ بْنِ أَبِي، أَيُّوبَ حَدَّثَنِي شُرَحْبِيلُ، - وَهُوَ ابْنُ شَرِيكٍ - عَنْ أَبِي عَبْدِ الرَّحْمَنِ الْحُبُلِيِّ، عَنْ عَبْدِ اللَّهِ، بْنِ عَمْرِو بْنِ الْعَاصِ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " قَدْ أَفْلَحَ مَنْ أَسْلَمَ وَرُزِقَ كَفَافًا وَقَنَّعَهُ اللَّهُ بِمَا آتَاهُ " .
Muslim
The Book of Zakat • Hadith 163