Adh Dhariyat, 56 Ayah
51:56
وَمَا خَلَقۡتُ ٱلۡجِنَّ وَٱلۡإِنسَ إِلَّا لِيَعۡبُدُونِ ٥٦
Wa Mā Khalaqtu Al-Jinna Wa Al-'Insa 'Illā Liya`budūni
And I did not create the jinn and mankind except to worship Me.