Surat Al-'Aĥqāf - سورة الأحقاف

وَمِن قَبْلِهِ كِتَابُ مُوسَىٰ إِمَامًا وَرَحْمَةً ۚ وَهَٰذَا كِتَابٌ مُّصَدِّقٌ لِّسَانًا عَرَبِيًّا لِّيُنذِرَ الَّذِينَ ظَلَمُوا وَبُشْرَىٰ لِلْمُحْسِنِينَ

Muhsin Khan: And before this was the Scripture of Musa (Moses) as a guide and a mercy. And this is a confirming Book (the Quran) in the Arabic language, to warn those who do wrong, and as glad tidings to the Muhsinun (good-doers - see V.2:112).