Hadith.1506 - Imam Zain al-Abidin Ali ibn al-Hussein عليه السلام said:
"Among the signs that Allah سبحانه وتعالى, the Mighty and Glorious, has decreed for people and that they are in need of is the sea which Allah سبحانه وتعالى created between the sky and the earth."
Imam عليه السلام continued, "Indeed, Allah سبحانه وتعالى, Blessed and Exalted, has arranged within it the courses of the sun, the moon, and the stars, and He has placed all of these upon a celestial sphere. He has assigned an angel to this sphere, along with seventy thousand other angels, and they rotate the sphere. When they cause it to rotate, the sun, moon, and stars also rotate with it, moving into the positions that Allah سبحانه وتعالى has ordained for them for each day and night. When the sins of the servants increase and Allah سبحانه وتعالى wills to warn them with a sign from His signs, He commands the angel in charge of the celestial sphere to move it from its usual course."
Imam عليه السلام said: "The angel commands the seventy thousand angels to shift the sphere from its course."
Imam عليه السلام added, "As a result, the sun descends into the sea where the celestial sphere is, causing its light to be obscured and its color to change. If Allah سبحانه وتعالى, the Mighty and Glorious, wills to make the sign more significant, He immerses it further into the sea, as He desires to instill fear in His servants with this sign."
Imam عليه السلام continued, "This happens during a solar eclipse, and the same occurs with the moon. When Allah سبحانه وتعالى, the Mighty and Glorious, wills to reveal and return it to its course, He commands the angel in charge of the sphere to restore it. The angel then returns it to its course, and the sun emerges from the water, appearing dim, and the moon experiences the same."
Then, Imam Zain al-Abidin Ali ibn al-Hussein said: "No one becomes fearful of these signs or is filled with awe except those who are from our followers. When such signs occur, seek refuge with Allah سبحانه وتعالى the Exalted and turn to Him."