Tawhid (monotheism and the oneness of Allah)

أَلَمْ تَعْلَمْ أَنَّ ٱللَّهَ لَهُۥ مُلْكُ ٱلسَّمَـٰوَٰتِ وَٱلْأَرْضِ ۗ وَمَا لَكُم مِّن دُونِ ٱللَّهِ مِن وَلِىٍّ وَلَا نَصِيرٍ

Do you not know that to Allāh belongs the dominion of the heavens and the earth and [that] you have not besides Allāh any protector or any helper?