Is the Hajj performed by someone who won the Hajj lottery, paid the fees from a bank deposit on which interest accrued, did not pay Zakat on his wealth, and has debts—is this Hajj Islamically valid, especially since he knows that Allah is pure and accepts only what is pure, given that refunding the fees is difficult and a portion of the amount is deducted?

The prerequisite for Hajj is financial capability, meaning that the expenses must exceed one's basic needs and cover outstanding debts. Zakat is obligatory immediately upon its due, as is the repayment of human debts when demanded. Delaying these is a mistake and an injustice. It is impermissible to benefit from usurious interest, and one must dispose of it. Whoever performs Hajj with illicit money commits a sin. Scholars have differed regarding the validity and acceptance of such a Hajj. Some say that the Hajj is valid and sufficient, though sinful, while others say it is neither sufficient nor accepted. However, if one was ignorant of the prohibition, then "what has passed is for him." If the creditors are forgiving, one must proceed with Hajj while also paying Zakat and disposing of usurious interest. Otherwise, it is better to reclaim the Hajj fees, repay debts, pay Zakat, and dispose of the illicit money, because procrastination in fulfilling obligations is among the major sins.