﴿ إِنَّنِىٓ أَنَا ٱللَّهُ لَآ إِلَٰهَ إِلَّآ أَنَا۠ فَٱعْبُدْنِى وَأَقِمِ ٱلصَّلَوٰةَ لِذِكْرِىٓ ﴾

“"Verily, I - I alone - am God; there is no deity save Me. Hence, worship Me alone, and be constant in prayer, so as to remember Me!”

Please check ayah 20:16 for complete tafsir.