Verily, He Who has given you (O Muhammad) the Quran (i.e. ordered you to act on its laws and to preach it to others) will surely bring you back to the Ma’ad (place of return, either to Makkah or to Paradise after your death, etc.). Say (O Muhammad): “My Lord is Aware of him who brings guidance, and he who is in manifest error.”
Meaning:-
Manifest: clear or obvious to the eye or mind.