God has never begotten a son. Nor was there ever any other god besides Him. Otherwise, each god would have declared independence with his creations, and they would have competed with each other for dominance. God be glorified; far above their claims.
مَا اتَّخَذَ اللَّهُ مِن وَلَدٍ وَما كانَ مَعَهُ مِن إِلٰهٍ إِذًا لَذَهَبَ كُلُّ إِلٰهٍ بِما خَلَقَ وَلَعَلا بَعضُهُم عَلىٰ بَعضٍ سُبحٰنَ اللَّهِ عَمّا يَصِفونَ
mat takhazal laahu minw waladinw wa maa kaana ma’ahoo min ilaah; izal lazahaba kullu ilaahim bimaa khalaqa wa la’alaa ba’duhum ‘alaa ba’d; Subhaannal laahi ‘ammaa yasifoon