Surah Az-Zumar, ayah 65

وَلَقَدۡ أُوحِيَ إِلَيۡكَ وَإِلَى ٱلَّذِينَ مِن قَبۡلِكَ لَئِنۡ أَشۡرَكۡتَ لَيَحۡبَطَنَّ عَمَلُكَ وَلَتَكُونَنَّ مِنَ ٱلۡخَٰسِرِينَ ٦٥

Walaqad ūhiya ilayka wa ilal-ladhīna min qablika la in ashrakta layahbatanna 'amaluka walatakūnanna minal-khāsirīn

And it was already revealed to you and to those before you that if you should associate [anything] with Allāh, your work would surely become worthless, and you would surely be among the losers.