Riyad Us-Saliheen (Gardens of the Righteous)

Chapter 106
What should a Person say or do when he Eats but is not Satisfied

743. Wahshi bin Harb (May Allah be pleased with him) reported: Some of the Companions of Messenger of Allah (PBUH) said: "We eat but are not satisfied.'' He (PBUH) said, "Perhaps you eat separately.'' The Companions replied in affirmative. He then said: "Eat together and mention the Name of Allah over your food. It will be blessed for you.''
[Abu Dawud].