Tawhid, The Unity of God from the Holy Qur'an

Surah Al-Muminun, n.23

مَا اتَّخَذَ اللَّهُ مِنْ وَلَدٍ وَمَا كَانَ مَعَهُ مِنْ إِلَٰهٍ ۚ إِذًا لَذَهَبَ كُلُّ إِلَٰهٍ بِمَا خَلَقَ وَلَعَلَا بَعْضُهُمْ عَلَىٰ بَعْضٍ ۚ سُبْحَانَ اللَّهِ عَمَّا يَصِفُونَ

Never did Allah take to Himself a son, and never was there with him any (other) god-- in that case would each god have certainly taken away what he created, and some of them would certainly have overpowered others; glory be to Allah above what they describe!(23:91)

عَالِمِ الْغَيْبِ وَالشَّهَادَةِ فَتَعَالَىٰ عَمَّا يُشْرِكُونَ

The Knower of the unseen and the seen, so may He be exalted above what they associate (with Him) (23:92)