Silsilah as-Sahihah 1833 — If one forgets “Bismillah” at start of meal

Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) says: If a person forgets to mention the name of Allah at the beginning of the meal, then as soon as he remembers, he should say: "With the name of Allah, at its beginning and at its end." Because he will start the meal anew and will prevent the evil one (Satan) from that which he had already obtained.