Validity of combined qurbaani

Suppose a persons Income is haram but he has enough money to pay zakat and do qurbani. But he says that from the haram money zakat and qurbani is not valid and so does not give zakat and does not do qurbani. He says Allah accepts Halal money. Is this correct. What is the way out for such a person who has haram income but is Sahabe Nisab in Ramadhan and in the days of Qurbani.? Can he just leave out these Ahkaam of Shariat.