قُلۡ اِنۡ كَانَ لِلرَّحۡمٰنِ وَلَدٌࣗۖ فَاَنَا اَوَّلُ الۡعٰبِدِيۡنَ

Say, [O Muhammad], "If the Most Merciful had a son, then I would be the first of [his] worshippers