Islamic Finance - ​In Islam, the source of law is extremely important.

​The Holy Qur'an
In any legal system, the source of law is vital. The origins of Islamic law can be traced back to the revelation of the Qur'an, which contains legal concepts and injunctions on topics like as ritual, marriage, divorce, succession, commercial transactions, and penal laws.

The Prophet Muhammad's Traditions

Another divine source of Islam is the Traditions of the Prophet Muhammad, which is a record of all the Prophet Muhammad's sayings, actions, and tacit endorsements. The literature of the Prophet Muhammad's Traditions is comprehensive and covers a considerably broader variety of themes than the legal verses in the Qur'an. This is not difficult to understand because the Prophet Muhammad was frequently contacted by his companions and the community for his decisions on a specific instance or situation. The Prophet Muhammad responded to and handled these incidents either through the Qur'an or through his Traditions, both of which are considered divine in nature. In general, the Prophetic Traditions, like English case law, concern a specific fact or situation by recording an answer to a specific query or a remedy supplied for a specific grievance. Among other things, he was questioned by his community about the legality of Salam sales, which are forward sales or sales of deferred delivery against a cash payment in advance. He said that a sale is lawful if the asset to be delivered in the future is certain in its characteristics, weight, or measurement. The delivery time must also be determined.