Surah At-Takwir — Ayah 23 (81:23)

English translation (Saheeh International)

And he has already seen him [i.e., Gabriel] in the clear horizon.¹

1. - i.e., the eastern horizon, where the sun rises. See footnote to 53:6.

Brief commentary

Your companion had seen Gabriel in the form that he was created in the clear horizon of the sky.