Narrated Ibn 'Abbas (RA):

The Prophet (ﷺ) was brought a dish containing Tharid and said, "Eat from its side and not from the middle, for the blessing descends in the middle of it." [Reported by al-Arba'a. This is the wording of an-Nasa'i. Its chain of narrators is Sahih (authentic)].

وَعَنْ اِبْنِ عَبَّاسٍ ; { أَنَّ اَلنَّبِيَّ ‏- صلى الله عليه وسلم ‏-أُتِيَ بِقَصْعَةٍ مِنْ ثَرِيدٍ، فَقَالَ : "كُلُوا مِنْ جَوَانِبِهَا, وَلَا تَأْكُلُوا مِنْ وَسَطِهَا, فَإِنَّ اَلْبَرَكَةَ تَنْزِلُ فِي وَسَطِهَا } رَوَاهُ اَلْأَرْبَعَةُ , وَهَذَا لَفْظُ النَّسَائِيِّ , وَسَنَدُهُ صَحِيحٌ [1]‏ .‏