What is the ruling on zakat for money that has not been paid for several years, and how can one expiate for usurious bank interest from which household expenses were paid, and what is the way to dispose of usurious investment certificates when the heir lacks experience, and what are the accepted forms of ongoing charity (sadaqah jariyah), and is a father considered a martyr if he dies from an abdominal disease?

It is hoped that the deceased will be a martyr if he repented from abandoning prayer before his death and was keen on performing it. The zakat (definition) on the deceased's zakatable wealth must be paid, and the unlawful usurious gains should be given to the poor and needy, or for the benefit of Muslims. There are many forms of ongoing charity (sadaqah (definition) jariyah), including building or contributing to a mosque, buying books and Qur'ans, endowing a house or shop, or contributing to the construction of a charitable hospital. The best thing that benefits the deceased after his death is to supplicate for his forgiveness and mercy.