Az-Zumar - 14

﴿قُلِ اللَّهَ أَعْبُدُ مُخْلِصًا لَهُ دِينِي﴾

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14. Say (O Muhammad ﷺ): "Allâh Alone I worship by doing religious deeds sincerely for His sake only (and not to show off, and not to set up rivals with Him in worship.)"