Az Zukhruf, 81 Ayah
43:81
قُلۡ إِن كَانَ لِلرَّحۡمَٰنِ وَلَدٞ فَأَنَا۠ أَوَّلُ ٱلۡعَٰبِدِينَ ٨١
Qul 'In Kāna Lilrraĥmani Waladun Fa'anā 'Awwalu Al-`Ābidīna
Say, [O Muhammad], "If the Most Merciful had a son, then I would be the first of [his] worshippers."