“Their prophet told them, ‘The sign of his royal authority is that the Ark of the Covenant will come to you, carried by angels, bearing inner peace from your Lord as well as reminders of the family of Moses and Aaron. If you believe, that is a sign for you.’”
~ Holy Quran 2:248 (Safi Kaskas)

Ibn ‘Abbas said, “The rainbow is security for the people of the earth that they will not be drowned. The Milky Way is the door of the heavens and forms a furrow through it.”
(Al-Adab Al-Mufrad 767)