Identityism is  the school of Sufi metaphysics of unity of being traditionally known as Wahdat al-Wujud or Wahdat ul-Wujood (Arabic: Literally, unity of existence) formulated by Ibn Arabi.
Identityism, or Wahdat al-Wujud, is a core concept in Sufi metaphysics, emphasizing the unity of all things and their interconnectedness with God. It was first articulated by Ibn Arabi.