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."
Sahih al-Bukhari Book 10, Hadith 66
← Previous Hadith The Prophet (ﷺ) said, "If supper is served, and Iqama is pronounced one should start with the supper."

Sahih al-Bukhari Book 10, Hadith 65 Next Hadith → Ibn `Umar said, "Allah's Messenger (ﷺ) said, 'If the supper is served for anyone of you and the Iqama is pronounced, start with the supper and don't be in haste (and carry on eating) till you finish it." If food was served for Ibn `Umar and Iqama was pronounced, he never came to the prayer till he finished it (i.e. food) in spite of the fact that he heard the recitation (of the Quran) by the Imam (in the prayer).

Sahih al-Bukhari Book 10, Hadith 67