Ash-Shuraa 42:51

Wama kana libasharin anyukallimahu Allahu illa wahyan aw min wara-ihijabin aw yursila rasoolan fayoohiya bi-ithnihima yashao innahu AAaliyyun hakeem

And it is not for any human being that Allāh should speak to him except by revelation or from behind a partition or that He sends a messenger [i.e., angel] to reveal, by His permission, what He wills. Indeed, He is Most High and Wise.

It is not (possible) for a human being that Allah speaks to him, except by way of revelation, or from behind a curtain, or that He sends a messenger, and he reveals, with His permission, what He wills. Surely, He is All-High, All-Wise.