Word by Word Analysis

وَكَذَٰلِكَ زَيَّنَ لِكَثِيرٍ مِّنَ ٱلْمُشْرِكِينَ قَتْلَ أَوْلَـٰدِهِمْ شُرَكَآؤُهُمْ لِيُرْدُوهُمْ وَلِيَلْبِسُوا۟ عَلَيْهِمْ دِينَهُمْ ۖ وَلَوْ شَآءَ ٱللَّهُ مَا فَعَلُوهُ ۖ فَذَرْهُمْ وَمَا يَفْتَرُونَ 137

And likewise, to many of the polytheists their partners have made [to seem] pleasing the killing of their children in order to bring about their destruction and to cover them with confusion in their religion. And if Allāh had willed, they would not have done so. So leave them and that which they invent.