Al An'am, 88 Ayah
6:88
ذَٰلِكَ هُدَى ٱللَّهِ يَهۡدِي بِهِۦ مَن يَشَآءُ مِنۡ عِبَادِهِۦۚ وَلَوۡ أَشۡرَكُواْ لَحَبِطَ عَنۡهُم مَّا كَانُواْ يَعۡمَلُونَ ٨٨
Dhālika Hudá Al-Lahi Yahdī Bihi Man Yashā'u Min `Ibādihi ۚ Wa Law 'Ashrakū Laĥabiţa `Anhum Mā Kānū Ya`malūna
That is the guidance of Allah by which He guides whomever He wills of His servants. But if they had associated others with Allah, then worthless for them would be whatever they were doing.