The Believers
وَمَن يَدْعُ مَعَ ٱللَّهِ إِلَـٰهًا ءَاخَرَ لَا بُرْهَـٰنَ لَهُۥ بِهِۦ فَإِنَّمَا حِسَابُهُۥ عِندَ رَبِّهِۦٓ ۚ إِنَّهُۥ لَا يُفْلِحُ ٱلْكَـٰفِرُونَ
And whoever invokes besides Allah another deity for which he has no proof - then his account is only with his Lord. Indeed, the disbelievers will not succeed.
Nearby ayahs help place verse 23:117 in sequence and meaning.
أَفَحَسِبْتُمْ أَنَّمَا خَلَقْنَـٰكُمْ عَبَثًا وَأَنَّكُمْ إِلَيْنَا لَا تُرْجَعُونَ
Then did you think that We created you uselessly and that to Us you would not be returned?"
فَتَعَـٰلَى ٱللَّهُ ٱلْمَلِكُ ٱلْحَقُّ ۖ لَآ إِلَـٰهَ إِلَّا هُوَ رَبُّ ٱلْعَرْشِ ٱلْكَرِيمِ
So exalted is Allah, the Sovereign, the Truth; there is no deity except Him, Lord of the Noble Throne.
وَقُل رَّبِّ ٱغْفِرْ وَٱرْحَمْ وَأَنتَ خَيْرُ ٱلرَّٰحِمِينَ
And, [O Muhammad], say, "My Lord, forgive and have mercy, and You are the best of the merciful."