Surah Al-Qasas (The Stories), Verse 80

وَقَالَ الَّذِیْنَ اُوْتُوا الْعِلْمَ وَیْلَكُمْ ثَوَابُ اللّٰهِ خَیْرٌ لِّمَنْ اٰمَنَ وَعَمِلَ صَالِحًا وَلَا یُلَقّٰىهَاۤ اِلَّا الصّٰبِرُوْنَ ۟

Wa qaalal lazeena ootul 'ilma wailakum sawaabul laahi khairul liman aamana wa 'amila saalihaa; wa laa yulaq qaahaaa illas saabiroon

“But those who had been granted (true) knowledge said: "Alas for you! The reward of Allah (in the Hereafter) is best for those who believe and work righteousness: but this none shall attain, save those who steadfastly persevere (in good)."”

Quran 28:80 (Yusuf Ali Translation)