Shama'il Muhammadiyah #183

Abu Ayyub Al-Ansari said: "We were in the home of the Prophet (Allah bless him and give him peace) one day, and he served a meal. I had never seen a meal from which greater blessing was obtained at the beginning of our eating, nor less blessing at the end of it, so we said: 'O Messenger of Allah, how is this?' He said: 'We mentioned the Name of Allah when we ate. Then someone who ate sat down and did not pronounce the Name of Allah (Exalted is He), so Satan ate with him!’”