Ibn 'Abbas (May Allah be pleased with them) reported:
The Prophet (ﷺ) said, "Blessing descends upon food in its middle, so eat from the sides of the vessel and do not eat from its middle."[At-Tirmidhi and Abu Dawud]. (ES)
App reference (ES): Book 3, Hadith 17 (ES)
Arabic/English book reference (ES): Book 3, Hadith 744 (ES)