Al 'Ankabut, 6 Ayah
29:6
وَمَن جَٰهَدَ فَإِنَّمَا يُجَٰهِدُ لِنَفۡسِهِۦٓۚ إِنَّ ٱللَّهَ لَغَنِيٌّ عَنِ ٱلۡعَٰلَمِينَ ٦
Wa Man Jāhada Fa'innamā Yujāhidu Linafsihi ۚ 'Inna Al-Laha Laghanīyun `Ani Al-`Ālamīna
And whoever strives only strives for [the benefit of] himself. Indeed, Allah is free from need of the worlds.