Surah Taha, Verse 12

إِنِّيٓ أَنَا۠ رَبُّكَ فَٱخۡلَعۡ نَعۡلَيۡكَ إِنَّكَ بِٱلۡوَادِ ٱلۡمُقَدَّسِ طُوٗى١٢

innī anā rabbuka fa-ikh'laʿ naʿlayka innaka bil-wādi l-muqadasi ṭuwan

Indeed, I am your Lord, so remove your sandals. Indeed, you are in the blessed valley of Ṭuwā.