It wasnarrated from Ibn 'Abbas that the Messenger of Allah (ﷺ)said:
"When food is served, take from the sides and leave the middle,forthe blessing descends in the middle." (RU)
English reference (RU): Vol. 4, Book 29, Hadith 3277 (RU)
Arabic reference (RU): Book 29, Hadith 3402 (RU)