It would be irrational if I did not devotedly serve the One Who created me, the One to Whom every conscious being inevitably returns.
وَمَا لِيَ لَا أَعْبُدُ الَّذِي فَطَرَنِي وَإِلَيْهِ تُرْجَعُونَ
Wa maa liya laaa a'budul lazee fataranee wa ilaihi turja'oon