The Messenger of Allah ﷺ said, "Eat the predawn meal, for there is blessing in it."
حدثنا هشيم أخبرنا عبد العزيز وإسماعيل عن عبد العزيز
قال رسول الله ﷺ تسحروا فإن في السحور بركة
Its chain of transmission is sahih, it has been mentioned many times before, from Abu Saeed and Abu Hurairah.