International law and sources

Article 38(1) of the Statute of the International Court of Justice (ICJ) lists four sources of international law: treaties and conventions, custom, general principles of law, and judicial decisions and teachings.

Sources of international law include treaties, international customs, general widely recognized principles of law, the decisions of national and lower courts, and scholarly writings. They are the materials and processes out of which the rules and principles regulating the international community are developed.

Sources of international law include treaties, international customs, general widely recognized principles of law, the decisions of national and lower courts, and scholarly writings.

Overview

international law, also called public international law or law of nations, the body of legal rules, norms, and standards that apply between sovereign states and other entities that are legally recognized as international actors.
The term was coined by the English philosopher Jeremy Bentham (1748–1832).

What are the sources of international law?

There is no central international body that creates public international law; it is created by several sources

The Charter of the United Nations is the establishing document for the International Court of Justice (ICJ) as the principal judicial organ of the UN

What is the function of sources theories in international law?

In other words, in international law as well as in domestic law, the function of sources theories is primarily to help to decide on the existence of sentences qua (respectively, international or domestic) law

Sources of Islamic Law

Various sources of Islamic Laws are used by Islamic jurisprudence to elaborate the body of Islamic law.
In Sunni Islam, the scriptural sources of traditional jurisprudence are the Holy Qur'an, believed by Muslims to be the direct and unaltered word of God, and the Sunnah, consisting of words and actions attributed to the Islamic prophet Muhammad in the hadith literature.
In Shi'ite jurisprudence, the notion of Sunnah is extended to include traditions of the Imams.

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