(42) باب إِذَا حَضَرَ الطَّعَامُ وَأُقِيمَتِ الصَّلاَةُ
Narrated Nafi`:
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 Qur'an) by the Imam (in the prayer).
Reference: Sahih al-Bukhari 673
In-book reference: Book 10, Hadith 67
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 1, Book 11, Hadith 642