The Messenger of Allah ﷺ said, "Successful is the one who has embraced Islam, been granted just enough provision, and made content by Allah with what He has given him."
أن رسول الله ﷺ قال: قد أفلح من أسلم، ورزق كفافا، وقنعه الله بما آتاه.
Muslim narrated it in the chapter on zakat (1054), from Abu Bakr bin Abu Shayba, who said, "Abu Abdul-Rahman Muqri narrated to us, from Saeed bin Abu Ayub, who said, 'Shurahbil, who is Ibn Sharik, narrated to me, from Abu Abdul-Rahman Hubli, from Abdullah bin Amr bin As," and he related it.