(Ittihad). 'Unificationism' or the 'coming together of two things'. Ittihad is considered to be an heretical doctrine in that it presupposes the existence of two independent beings, and this is in contradiction to the concept of Unity of Existence or Oneness of Being (Wahdat al Wujud). When taken to mean 'union' then ittihad is used in the sense that things are non-existent and their existence is Allah's. It may also refer to the experience of oneness with Allah.