Iman (Arabic: إيمان) is an Islamic term, literally meaning "to learn", "to fully observe one's faith" or "to learn one's faith", and lexically meaning affirmation and confirmation in the heart, as can be found in a verse of the Qur'an:
"Joseph's brothers said,
"Our father! Indeed, we went racing with one another, and we left Joseph with our belongings, and the wolf devoured him. But you will not believe us, even if we are truthful." [12:17]
It is most often associated with true and unadulterated faith in Allah as the one and only God, in Islam.