Narrated Anas:
that the Messenger of Allah (ﷺ) said: "The parable of my Ummah is that of a rain; it is not known if its beginning is better or its end." (TR)
English reference (TR): Vol. 5, Book 42, Hadith 2869 (TR)
Arabic reference (TR): Book 44, Hadith 3109 (TR)