Daniel 10:9
Yet heard I the voice of his words: and when I heard the voice of his words, then was I in a deep sleep on my face, and my face toward the ground.
Cross-reference
In Daniel 10:15, Daniel turns his face to the ground and is mute—a direct continuation of his prostration in 10:9, showing prolonged overwhelming.
In Daniel 10:16, after being touched, Daniel speaks of his weakness—follows from 10:9's prostration, showing progression from collapse to speech.
In Daniel 8:18, the prophet also falls into a deep sleep at the angel's voice — the same pattern of visionary collapse.
In Ezekiel 3:23, Ezekiel falls on his face before the glory of the Lord—a very similar response of prostration to divine revelation.
In Revelation 1:17, John falls at Christ's feet as dead—a NT parallel to Daniel's prostration before a divine messenger.
In Genesis 15:12, Abram also falls into a deep sleep during a divine covenant ceremony — a prophetic sleep parallel.
Job 4:13 describes deep sleep coming with night visions — Eliphaz's experience parallels Daniel's revelatory sleep.
Job 33:15 speaks of deep sleep as a means God uses to speak to people in dreams — Daniel embodies that pattern.