Qasamah in Islamic Juridical System

Qasamah is concisely investigated in this essay. It includes the definition of Qasamah both lexicologically and terminologically, being original or Amarah (circumstantial evidence), duties of the judge, the performance quality, and the legal viewpoint on Qasamah both in Islam and among other nations. In order to discuss Qasamah, this paper takes an inter-religious approach based on the jurisprudential regulations Islam and the acts approved the Islamic Revolution in Iran. Since the quality of performing this affair has also been investigated within an Islamic government, some parts seem to be legal, which are mentioned along the paper.