Surah Az-Zumar (The Successive Groups), Verse 15

فَاعْبُدُوْا مَا شِئْتُمْ مِّنْ دُوْنِهٖ قُلْ اِنَّ الْخٰسِرِیْنَ الَّذِیْنَ خَسِرُوْۤا اَنْفُسَهُمْ وَاَهْلِیْهِمْ یَوْمَ الْقِیٰمَةِ اَلَا ذٰلِكَ هُوَ الْخُسْرَانُ الْمُبِیْنُ ۟

Fa'budoo maa shi'tum min doonih; qul innal khaasireenal lazeena khasirooo anfusahum wa ahleehim yawmal qiyaamah; alaa zaalika huwal khusraanul mubeen

“"Serve ye what ye will besides Him." Say: "Truly, those in loss are those who lose their own souls and their People on the Day of Judgment: Ah! that is indeed the (real and) evident Loss!”

Quran 39:15 (Yusuf Ali Translation)