(What should one do) if the meal has been served and the Iqama has been pronounced for As-Salat(the prayer)
وَقَالَ زُهَيْرٌ وَوَهْبُ بْنُ عُثْمَانَ عَنْ مُوسَى بْنِ عُقْبَةَ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، قَالَ قَالَ النَّبِيُّ صلى الله عليه وسلم " إِذَا كَانَ أَحَدُكُمْ عَلَى الطَّعَامِ فَلاَ يَعْجَلْ حَتَّى يَقْضِيَ حَاجَتَهُ مِنْهُ، وَإِنْ أُقِيمَتِ الصَّلاَةُ ". رَوَاهُ إِبْرَاهِيمُ بْنُ الْمُنْذِرِ عَنْ وَهْبِ بْنِ عُثْمَانَ، وَوَهْبٌ مَدِينِيٌّ.
Narrated Ibn `Umar: The Prophet (ﷺ) said, "If anyone of you is having his meals, he should not hurry up till he is; satisfied even if the prayer has been started."