Quran 6:117 from Surah Al-An'aam on Divine Marvels.
إِنَّ رَبَّكَ هُوَ أَعۡلَمُ مَن يَضِلُّ عَن سَبِيلِهِۦۖ وَهُوَ أَعۡلَمُ بِٱلۡمُهۡتَدِينَ
English translation: Indeed your Lord He knows best who strays from His way and He (is) most knowing of the guided-ones
Transliteration: inna rabbaka huwa a'lamu man yadillu an sabilihi wahuwa a'lamu bil-muh'tadina