Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrated that the Messenger of Allah (peace and blessings be upon him) met Zayd bin Amr bin Nufayl at the lower part of Baldah, and this was before revelation had descended upon the Messenger of Allah (peace and blessings be upon him). The Messenger of Allah (peace and blessings be upon him) presented to him a dining mat with meat on it, but he refused to eat and said: I do not eat what they slaughter on their idols; I eat only that over which the name of Allah has been mentioned.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 13112