That religion to which they were guided is God’s guidance wherewith He guides whom He will of His servants; had they hypothetically speaking been idolaters all that they did would have been in vain.
- 6:8888
ذَٰلِكَ هُدَى اللَّهِ يَهْدِي بِهِ مَنْ يَشَاءُ مِنْ عِبَادِهِ ۚ وَلَوْ أَشْرَكُوا لَحَبِطَ عَنْهُمْ مَا كَانُوا يَعْمَلُونَ
This is God's guidance: He gives among His creatures whom He will. If they had associated others with Him, surely vain would have been all they did.
- common.revelation-Meccan
- common.hizb : 55