One who marries with haram earnings: his marriage is valid if he repents

Question: A man whose entire wealth is haram, and he married with it, performed Hajj with it, and engaged in trade, and he wants to repent. What should he do?

Answer: If he repents, Allah will accept his repentance. The money is a matter of scholarly consideration. Some scholars consider it his to keep, based on the saying of Allah the Exalted: [Surat al-Baqarah: 275]. If he takes from it what satisfies his needs and donates the rest, that is sufficient, God willing. If he purifies himself from all of it and donates it in the causes of righteousness and starts earning lawful income, that is safer and better. However, if he is poor and benefits from it, that is permissible, because Allah said: This includes the disbelievers who embraced Islam, who used to practice riba (usury or interest), which is forbidden, and it was left for them. The Messenger of Allah (peace and blessings be upon him) did not tell them to return the interest-based money after they repented and embraced Islam.
So, this Muslim, some scholars said, is like the disbeliever; he is not worse than the disbeliever. He is more deserving than the disbeliever if he repents, because depriving him of the money might also deter him from repenting. If it is easy to remove it and donate it, that is safer, to avoid the disagreement among scholars. The Hajj is valid because it is a physical act that has no connection to money.