The Messenger of Allah ﷺ said, "The likeness of my nation is like the rain. It is not known whether its beginning is better or its end."
حدثنا عبد الرحمن حدثنا زياد أبو عمر عن الحسن
قال رسول الله ﷺ مثل أمتي مثل المطر لا يدرى أوله خير أم آخره
Its isnad is hasan, because of Ziyad bin Muslim, or Ibn Abu Muslim, Abu Umar Fazari, whom Ibn Ahmad trusted, as did Abdul-Rahman bin Mahdi, who narrated from him. Tirmidhi related the hadith at 2869, and it has already appeared at 12400.