يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوا ٱتَّقُوا ٱللَّهَ وَٱبْتَغُوٓا إِلَيْهِ ٱلْوَسِيلَةَ وَجَٰهِدُوا فِى سَبِيلِهِ لَعَلَّكُمْ تُفْلِحُونَ

The greatest achievement for a man is his nearness to God. This nearness in its real and perfect shape will be his in the Hereafter. However, when a man’s righteous action brings him nearness to God, he experiences this in this world purely in the form of heavenly feeling. The way to attain this nearness is through becoming a true worshipper of God, and through struggling to make efforts for His cause.

— Source: Tazkirul Quran (Maulana Wahiduddin Khan) via Quran.com (5:35)