Sura 7 Al-A'raf (The Heights), aya 170

1. وَالَّذِينَ يُمَسِّكُونَ بِالْكِتَابِ وَأَقَامُوا الصَّلَاةَ إِنَّا لَا نُضِيعُ أَجْرَ الْمُصْلِحِينَ

   But those who hold fast to the Book and establish prayer - indeed, We will not allow to be lost the reward of the reformers.

   7:170

Tafsiri: Saheeh International