Is the doctrine of Wahdat al-Wujud (unity of existence), which the leaders of the Hanafi Deobandi school believe in, from the Quran and Sunnah, or is it Kufr (disbelief)?

The belief in "Unity of Existence" (Wahdat al-Wujud), which posits that "existence is the very essence of Allah, the Exalted," is considered a corrupt idea and a false belief that contradicts the Qur’an, the Sunnah, and the consensus of scholars. Although some prominent Imams of the Deobandi school held this view, scholars have ruled it invalid and declared it a doctrine of disbelief (kufr) and polytheism (shirk) because it negates Tawhid (monotheism) and leads to heinous consequences such as legitimizing abominations, equating faith with disbelief, and attributing the vilest of creation to Allah, Glorified and Exalted be He. Allah Almighty has clarified in many verses that the created is not the Creator, a truth that every Muslim and rational person inherently understands.