Sahih al-Bukhari 672
Sahih al-Bukhari · Book 10: Call to Prayers (Adhaan) · (What should one do) if the meal has been served and the Iqama has been pronounced for As-Salat(the prayer)
Narrated Anas bin Malik:
حَدَّثَنَا يَحْيَى بْنُ بُكَيْرٍ ، قَالَ حَدَّثَنَا اللَّيْثُ ، عَنْ عُقَيْلٍ ، عَنِ ابْنِ شِهَابٍ ، عَنْ أَنَسِ بْنِ مَالِكٍ ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " إِذَا قُدِّمَ الْعَشَاءُ فَابْدَءُوا بِهِ قَبْلَ أَنْ تُصَلُّوا صَلاَةَ الْمَغْرِبِ، وَلاَ تَعْجَلُوا عَنْ عَشَائِكُمْ " .
Allah's Messenger (ﷺ) said, "If the supper is served start having it before praying the Maghrib prayer and do not be hasty in finishing it."