Sayyiduna Anas bin Malik (may Allah be pleased with him) narrates from the Noble Prophet (peace and blessings be upon him) that he (peace and blessings be upon him) said: "When the evening meal is served and the prayer is established, then eat the food first."
Hadith Referenceصحيح ابن خزيمه / جماع أبواب الأفعال المكروهة فى الصلاة التى قد نهي عنها المصلي / 934
Sayyiduna Ibn Umar (may Allah be pleased with them both) narrates that the Messenger of Allah (peace and blessings be upon him) said: "When the night meal is placed (before you) and the call to prayer is given for the prayer, then eat the food first (and then perform the prayer)." Nafi' says that one night Sayyiduna Ibn Umar (may Allah be pleased with them both) ate the night meal while he was listening to the recitation of the Imam.
Hadith Referenceصحيح ابن خزيمه / جماع أبواب الأفعال المكروهة فى الصلاة التى قد نهي عنها المصلي / 935