Hazrat Sha’bi (may Allah have mercy on him) narrates that Hazrat Umar (may Allah be pleased with him) delivered a sermon, praised Allah Almighty, and then said: Indeed, I command you regarding some things which may not be beneficial for you, and I forbid you from some things which may be beneficial for you. Indeed, the last covenant that the Messenger of Allah (peace and blessings be upon him) took from us was concerning the verse of usury. The Messenger of Allah (peace and blessings be upon him) departed from this world and did not explain its details to us. Indeed, this is also usury and also doubtful. Therefore, leave the doubtful thing and choose the one that is not doubtful. Hazrat Sha’bi was asked about something, and he replied that this is usury and also doubtful, so leave the things that involve usury and those that lead to doubt.