قَالَ النَّبِيُّ صلى الله عليه وسلم " إِذَا كَانَ أَحَدُكُمْ عَلَى الطَّعَامِ فَلاَ يَعْجَلْ حَتَّى يَقْضِيَ حَاجَتَهُ مِنْهُ، وَإِنْ أُقِيمَتِ الصَّلاَةُ ".
Ibn Umar reported that the Prophet ﷺ said, “When one of you is at a meal, let him not hurry until he has satisfied his need from it, even if the iqamah for the prayer is called.”
also in Sahih al-Bukhari 673