(58) باب إِذَا حَضَرَ الْعَشَاءُ فَلاَ يَعْجَلْ عَنْ عَشَائِهِ
Narrated Anas bin Malik:
The Prophet (ﷺ) said, If supper is served and the Iqama for (Isha) prayer is proclaimed, start with you supper first."
Reference: Sahih al-Bukhari 5463
In-book reference: Book 70, Hadith 92
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 7, Book 65, Hadith 373