Surah Al-Jinn 72:18

وَأَنَّ ٱلْمَسَـٰجِدَ لِلَّهِ فَلَا تَدْعُوا۟ مَعَ ٱللَّهِ أَحَدًا

And [He revealed] that the masjids are for Allāh, so do not invoke with Allāh anyone.

Translation: Saheeh International

Tafsir

And it has been revealed to me that the places of prayer belong to God so do not invoke in them anyone along with God by associating others with Him like the Jews and Christians do who when they enter their churches and temples they ascribe partners to God.

Excerpt from Tafsir al-Jalalayn, commentary on 72:18, via Quran.com. The reader has the full commentary and 9 more tafsirs.