Surah Al-Baqarah Verse 207

وَمِنَ النَّاسِ مَنْ يَشْرِي نَفْسَهُ ابْتِغَاءَ مَرْضَاتِ اللَّهِ ۗ وَاللَّهُ رَءُوفٌ بِالْعِبَادِ

And of the people is he who sells himself, seeking means to the approval of Allah. And Allah is kind to [His] servants