Musannaf Ibn Abi Shaybah 34886 — What they said on the food of a Jew

Amr bin al-Durays al-Asadi (may Allah have mercy on him) said: I asked al-Sha'bi (may Allah have mercy on him): We are going to wage jihad in Armenia, which is a Christian land. What is your view on their slaughtered animals and their food? He (may Allah have mercy on him) said: When we went on campaign in a land, we would ask about its people. If they said: We are Jews or we are Christians, we would eat their slaughtered animals and their food, and we would cook in their vessels.