The Table Spread - 5:93
Those who believe and do righteous deeds, there is no sin on them for what they eat, as long as they believe and do righteous deeds in obedience to the commandments, and they abstain from sin and believe, and they abstain and do good. Allah loves those who do good.
The most important criterion of belief:
The Cattle/6:82
Those who believe and do not mix their faith with wrongdoing, they deserve security and they have found the truth.
Luqman/31:13
"When Lokman advised his son, he said: "My dear son, do not associate partners with Allah; surely shirk (associating partners with God) is a great wrong."
The Companies/39:65
It has been revealed to you and those before you that if you associate partners, all that you do will be in vain and you will be of the losers.