Dalil

Quran Taha 20:12

إِنِّيٓ أَنَا۠ رَبُّكَ فَٱخۡلَعۡ نَعۡلَيۡكَ إِنَّكَ بِٱلۡوَادِ ٱلۡمُقَدَّسِ طُوٗى

Translation

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