Qur'ān 2:207 · Al-Baqarah (البقرة)

وَمِنَ ٱلنَّاسِ مَن يَشْرِى نَفْسَهُ ٱبْتِغَآءَ مَرْضَاتِ ٱللَّهِ ۗ وَٱللَّهُ رَءُوفٌۢ بِٱلْعِبَادِ

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