Ṣaḥīḥ Muslim Ḥadīth [1054]
It is narrated on the authority of ‘Abdullāh ibn ‘Amr ibn al-‘Āṣ (may Allāh be pleased with them both) that the Messenger of Allāh (peace and blessings of Allāh be upon him) said: “He is successful who has accepted Islām, who has been provided with sufficient for his want and been made contented by Allāh with what He has given him.”
Commentary by Shaykh ‘Abdul-‘Azīz ‘Alvī, Dārussalām, Ḥāfiẓ Ṣalāḥuddīn Yūsuf, and Mawlānā Sayyid Muḥammad ‘Abdul-Awwal al-Ghaznawī added.