الَّذِيْنَ يَجْعَلُوْنَ مَعَ اللّٰهِ اِلٰهًا اٰخَرَۚ فَسَوْفَ يَعْلَمُوْنَ ( الحجر: ٩٦ )
Allazeena yaj'aloona ma'al laahi ilaahan aakhar; fasawfa ya'lamoon (al-Ḥijr 15:96)
Who make [equal] with Allah another deity. But they are going to know. (Al-Hijr  : 96)
1 Mufti Taqi Usmani
- those who believe in any other god along with Allah. So, they shall soon learn (the reality).