Halal and haram money

Please answer based on Hanafi Fiqh

Assalam o alaikum, I hope you are okay. I have been lending halal money to someone which they return back their money from haram sources such as interest money and benefits they are not eligible for from the Government. I am worried if this money would be halal for me since I lent them halal money.

Also, for example, if somebody has £100 halal money and £200 haram money, which is £300 in total and then their had an expense of £250 to pay off and then they pay £50 to me. Can I assume that the £50 is halal for me or would it be haram?

Please give me two answers. One answer for the first paragraph if all the money is haram. And the other answer for halal and haram money (more haram than halal)

Jazakallah Khair

@Mufti_Faraz_Adam
@Mufti_Billal

Please answer based on Hanafi Fiqh