It is reported that ʿAbdullāh b. Masʿūd - Allāh be pleased with him - said:

Fulfil what Allāh has obligated you to do and you will be from the most devout of people, stay away from what Allāh has forbidden you and you will be from the most careful of people, and be satisfied with what Allāh has apportioned for you and you will be from the richest of people.

Hannād b. Al-Sarī, Al-Zuhd, article 1032.