creation in three stages: the Most Holy Effusion (al-fayd al-aqdas), the Holy Effusion (al-fayd al-muqaddas) and the Perpetual Effusion (al-fayd al-mustamirr). Waḥdat al-wujūd spread through the teachings of the Sufis like Qunyawi, Jandi, Tilimsani, Qayshari, Jami etc. The noted scholar Muhibullah Allahabadi strongly supported the doctrine. Sachal Sarmast and Bulleh Shah two Sufi poets from present day Pakistan, were also ardent followers of Waḥdat al-wujūd. It is also associated with the Hamah Ust (Persian meaning "He is the only one") philosophy in South Asia. Tashkīk Tashkīk or gradation is closely associated with Sadrian interpretation of waḥdat al-wujūd. According to this school, the reality and existence are identical which means existence is one but graded in intensity. This methodology was given a name of tashkik al-wujud and it thus explains that there is gradation of existence that stand in a vast hierarchical chain of being (marāṭib al-wujūd) from floor (farsh) to divine throne (ʿarsh), but the wujūd of each existent māhīyya is nothing but a grade of the single reality of wujūd whose source is God, the absolute being (al-wujūd al-mutlaq). What differentiates the wujūd of different existents is nothing but wujūd in different degrees of strength and weakness. The universe is nothing but different degrees of strengths and weaknesses of wujūd, ranging from intense degree of wujūd of arch-angelic realities, to the dim wujūd of lowly dust from which Adam was made. Opposition to Wahdat al-Wujud Sufi metaphysics has been a subject to criticism by most non-Sufis; in Al-Andalus, where most of the Muslim scholars were either Zahirites or Malikites preferring the Ash'arite creed, Sufi metaphysics was considered blasphemy and its practitioners blacklisted. Followers of the Ash'arite creed in the east were often suspicious of Sufism as well, most often citing Sufi metaphysics as well. However, it is important to note that Ibn Arabi was influenced by Al Ghazali, who himself was a strong supporter of the Ash'arite creed. Opposition within Sufism As a doctrine, waḥdat al-wujūd was also not without controversy or opposition within the Sufi community, some members of which responded to its conceptual emergence by formulating rival doctrines. One example was waḥdat asḥ-shuhūd, which was formulated by 'Ala' al-Dawla Simnani (1261–1336), and would go on to attract many followers in India, including Ahmed Sirhindi (1564–1624), who provided some of the most widely accepted formulations of this doctrine in the Indian sub-continent. Sirhindi wrote that one should discern