"Messenger of Allah, we eat but we are not satisfied."He said, "Perhaps you eat separately?"They replied, "Yes."He said, "Gather together over your food and mention the name of Allah over it, and it will be blessed for you."
حدثنا إبراهيم بن موسى الرازي حدثنا الوليد بن مسلم قال حدثني وحشي بن حرب عن أبيه
يا رسول الله إنا نأكل ولا نشبع قال فلعلكم تفترقون قالوا نعم قال فاجتمعوا على طعامكم واذكروا اسم الله عليه يبارك لكم فيه
Graded, its chain is daif. Ibn Majah collected it in the Book of Foods, chapter on gathering together for food, hadith 3286, through Walid bin Muslim, but he did not explicitly state hearing it in this repeatedly linked chain. Despite that, Ibn Hibban graded it sahih, hadith 1345. As for Harb bin Wahshi, no one but Ibn Hibban authenticated him.