Surah Al-A'raf, ayah 170

وَٱلَّذِينَ يُمَسِّكُونَ بِٱلۡكِتَٰبِ وَأَقَامُواْ ٱلصَّلَوٰةَ إِنَّا لَا نُضِيعُ أَجۡرَ ٱلۡمُصۡلِحِينَ ١٧٠

Walladhīna yumassikūna bil-kitābi wa aqāmus-salawāta innā lā nudī'u ajral-muslihīn

But those who hold fast to the Book [i.e., the Qur’ān] and establish prayer - indeed, We will not allow to be lost the reward of the reformers.