Is it permissible to accept Zakat al-Fitr from a bank employee or from money whose source is the bank?

Working in a usurious bank or borrowing from it with interest is forbidden (haram), and whoever does so must repent. Zakat al-Fitr must be from purely lawful (halal) money, and it is not valid if it is from unlawful (haram) money. It is permissible to accept Zakat al-Fitr from someone whose money is mixed, as long as the recipient does not know that the specific money itself is unlawful. Similarly, it is permissible for a needy person to take unlawful money if they know that its owner is disposing of it as a means of ridding themselves of it.