Is it obligatory to abstain from working in stock speculation for a commission, when a portion of this commission results from dealing in prohibited or mixed stocks, and how is mixed wealth purified?

It is permissible to engage in speculative trading (Mudarabah) with shares, provided that prohibited shares are avoided. If prohibited transactions occur, their entire commission must be disposed of by spending it on charitable causes (birr) and for the benefit of Muslims. As for mixed transactions, the commission should be disposed of to the extent that absolves one's responsibility. It is obligatory to avoid dealing in prohibited companies, whether buying or selling, and to seek other employment if this becomes difficult. For "The Holy Spirit has inspired in my soul that no soul will die until it has completed its sustenance and its appointed time. So, fear Allah and be graceful in seeking provision."