Is it permissible to deal with participatory banks integrated with usurious banks, given the existence of murabaha formulas that do not fulfill the purpose of prohibiting usury, and what should one do who has been compelled to enter into one of the two formulas? Does this weaken the authenticity of the hadith that curses the one who authorizes usury?

Dealing with Islamic banks in Sharia (definition)-compliant Murabaha is permissible, unlike dealing with usurious banks. The fact that an Islamic bank deals with usurious banks out of necessity does not render it unlawful. Usury is forbidden and is one of the gravest major sins, and the hadith (definition) cursing the one who consumes usury and the one who feeds it is authentic. The authenticity of this hadith does not contradict the fact that the Prophet, peace and blessings be upon him, was not sent to curse, but rather was sent as a mercy. It is not permissible to deal with usury except in cases of dire necessity, and the limit of necessity that permits dealing with it has been clarified.