ANSWER:

Once you signed it yourself, the interest generated from it from the time you signed is haram money and you must dispose it off to poor and needy Muslims to cleanse your wealth besides repenting to Allah for signing on the haram transaction and never sign again.

You can keep the capital invested (18 lakhs)

QUESTION: My dad invested 4.5 lakh in my name when I was small, in a scheme to double it. After 10 yrs it doubled to 9 lkh. Again, when I was still a minor, he doubled it to 18 lkh. Now as I’m above 18 yrs, he told me to sign the docs to redouble 18 lkh. I knew it’s Haram, but I forcibly signed unwillingly. He told me that all that money after doubling i.e 36 lakh, belong to me. Is that money halal for me?