The Prophet ﷺ said, If supper is served and the Iqama for (Isha) prayer is proclaimed, start with you supper first." (Using translation from Bukhārī 5463)
عَنِ النَّبِيِّ ﷺ قَالَ إِذَا وُضِعَ الْعَشَاءُ وَأُقِيمَتِ الصَّلَاةُ فَابْدَءُوا بِالْعَشَاءِ قَالَ وَلَقَدْ تَعَشَّى ابْنُ عُمَرَ مَرَّةً وَهُوَ يَسْمَعُ قِرَاءَةَ الْإِمَامِ