The Messenger of Allah ﷺ said, "Guard yourselves against the Fire, even with half a date."
حدثنا يحيى حدثنا شعبة حدثنا أبو إسحاق عن عبد الله بن معقل قال سمعت
قال رسول الله ﷺ اتقوا النار ولو بشق تمرة
Its chain of transmission is sahih, mentioned previously at 19278.