(329) بَابُ الْمَجَرَّةِ
Ibn 'Abbas said, "The rainbow is security for the people of theearth that they will not be drowned. The Milky Way is the door of the heavensand forms a furrow through it."
Reference: Al-Adab Al-Mufrad 767
In-book reference: Book 33, Hadith 14
English translation: Book 33, Hadith 767