Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answered 3 years ago

If you are sure that the whole amount of inheritance is unlawful then you are not allowed to utilize any amount of it, but give it to poor in charity through the Marja of Taqleed.

If you know that part of the amount is unlawful, then you are allowed to utilize the portion which is from allowed income.