Luqman - 31:22

وَمَن يُسْلِمْ وَجْهَهُ إِلَى اللَّهِ وَهُوَ مُحْسِنٌ فَقَدِ اسْتَمْسَكَ بِالْعُرْوَةِ الْوُثْقَى وَإِلَى اللَّهِ عَاقِبَةُ الْأُمُورِ
[31:22]
And whoever submits himself wholly to Allah and he is the doer of good (to others), he indeed has taken hold of the firmest thing upon which one can lay hold; and Allah's is the end of affairs.
Whoever submits his whole self to Allah, and is a doer of good, has grasped indeed the most trustworthy hand-hold: and with Allah rests the End and Decision of (all) affairs.
Whosoever surrendereth his purpose to Allah while doing good, he verily hath grasped the firm hand-hold. Unto Allah belongeth the sequel of all things.