Concept:Revelation experienced through vision or true dream is known as Ru'ya.Explanation:Ru'ya refers to a form of revelation that comes in a vision or a true dream.Its Arabic root consists of the letters Rā, Hamzah, and Yā, which relate to sight and vision with the eye or the mind.It is different from Wahy, which is direct revelation, and from Ilhām and Kashf.Among the options given, the correct type is Ru'ya.Answer:Ru'ya