The Messenger of Allah ﷺ said, "Eat the predawn meal, for there is blessing in it."
حدثنا وكيع حدثنا ابن أبي ليلى عن عطاء
قال رسول الله ﷺ تسحروا فإن في السحور بركة
Its isnad is sahih. It has already been mentioned at 8884.