The Pleading Woman - 58:22
You will not see a people who believe in Allah and His messenger and the Last Day taking as friends those who oppose Allah and His messenger. Even if they are their own mothers and fathers and children and sons and sons and brothers and relatives. He has written faith in their hearts and supported them with a revelation from Himself. He will admit them into Gardens in which rivers flow, where they will abide forever. Allah is pleased with them and they are pleased with Him. They are the party of Allah. Surely, the party of Allah will win.
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.