Surah Al-Hijr (The Stone Valley), Verse 96

الَّذِیْنَ یَجْعَلُوْنَ مَعَ اللّٰهِ اِلٰهًا اٰخَرَ فَسَوْفَ یَعْلَمُوْنَ ۟

Allazeena yaj'aloona ma'al laahi ilaahan aakhar; fasawfa ya'lamoon

“Those who adopt, with Allah, another god: but soon will they come to know.”

Quran 15:96 (Yusuf Ali Translation)