Hu or Huwa is a name for God in Sufism. Literally, Hebrew and Arabic for the English Third person and is used in Sufism to avoid attributation a grammatical gender to Allah.
In Sufism Hu or Huwa is the pronoun used with Allah or God, and is used as a name of God. Allah Hu means "God, Just He!" In Arabic Allah means God and with Hu, as an intensive added to Allah, means "God himself." Hu is also found in the Islamic credo La Ilaha Ila Allah Hu: "There is no God but Allah," or in Sufi interpretation "There is no reality, except God", or in La Ilaha Ila Huwa meaning "There is no god but He".
References
Hu (Sufism) Wikipedia(Text) CC BY-SA