Hadithcore
Mishkat al-Masabih, 4257

'Umar b. al-Khattab reported God's messenger as saying, "Eat together and not separately, for the blessing is associated with the company." Ibn Majah transmitted it.

وَعَنْ عُمَرَ بْنِ الْخَطَّابِ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «كُلُوا جَمِيعًا وَلَا تَفَرَّقُوا فَإِنَّ الْبَرَكَةَ معَ الجماعةِ» . رَوَاهُ ابْنُ مَاجَهْ

References1 variant
In-Book Reference
Book 21, Hadith 94