Qur'an
إِنَّ رَبَّكَ هُوَ أَعۡلَمُ بِمَن ضَلَّ عَن سَبِيلِهِۦ وَهُوَ أَعۡلَمُ بِٱلۡمُهۡتَدِينَ
Indeed, your Lord is most knowing of who has gone astray from His way, and He is most knowing of the [rightly] guided
Al-Qalam · 68:7
In context
وَإِنَّكَ لَعَلَىٰ خُلُقٍ عَظِيمٖ
68:4And indeed, you are of a great moral character
فَسَتُبۡصِرُ وَيُبۡصِرُونَ
68:5So you will see and they will see
بِأَييِّكُمُ ٱلۡمَفۡتُونُ
68:6Which of you is the afflicted [by a devil]
إِنَّ رَبَّكَ هُوَ أَعۡلَمُ بِمَن ضَلَّ عَن سَبِيلِهِۦ وَهُوَ أَعۡلَمُ بِٱلۡمُهۡتَدِينَ
68:7Indeed, your Lord is most knowing of who has gone astray from His way, and He is most knowing of the [rightly] guided
فَلَا تُطِعِ ٱلۡمُكَذِّبِينَ
68:8Then do not obey the deniers
وَدُّواْ لَوۡ تُدۡهِنُ فَيُدۡهِنُونَ
68:9They wish that you would soften [in your position], so they would soften [toward you]
وَلَا تُطِعۡ كُلَّ حَلَّافٖ مَّهِينٍ
68:10And do not obey every worthless habitual swearer