(Asshuara’) 26 : 213
فَلَا تَدْعُ مَعَ اللَّهِ إِلَٰهًا آخَرَ فَتَكُونَ مِنَ الْمُعَذَّبِينَ
Then you don’t invoke another deity with Lord Allah, then you would be among the punished.
It is told in verses 51: 50-51: “So you flee to Lord Allah, indeed I am to you from Him a manifest warner. And you don’t ascribe any deity with Allah, Indeed I am to you from Him a manifest warner!”. To flee to Lord Allah means to flee to the Safeguard Adhikr as explained in verse 5: 48. See explanation 17: 39 and 25: 68-70.