Surah Al-'Ankabut, Verse 6

وَمَن جَٰهَدَ فَإِنَّمَا يُجَٰهِدُ لِنَفۡسِهِۦٓۚ إِنَّ ٱللَّهَ لَغَنِيٌّ عَنِ ٱلۡعَٰلَمِينَ٦

waman jāhada fa-innamā yujāhidu linafsihi inna l-laha laghaniyyun ʿani l-ʿālamīna

And whoever strives only strives for [the benefit of] himself. Indeed, Allāh is Free from need of the worlds.