العنكبوت — Al-'Ankabut Ayat 6
وَمَنْ جَاهَدَ فَاِنَّمَا يُجَاهِدُ لِنَفْسِهٖ ۗاِنَّ اللّٰهَ لَغَنِيٌّ عَنِ الْعٰلَمِيْنَ
Wa man jāhada fa'innamā yujāhidu linafsih(ī), innallāha laganiyyun ‘anil-‘ālamīn(a).
"And whoever strives only strives for [the benefit of] himself. Indeed, Allah is free from need of the worlds."