Tashkeek
Tashkeek or gradation is closely associated with Sadrian interpretation of wahdat al-wujud. According to this school, not only there is gradation of existence that stand in a vast hierarchical chain of being (maratib al-wujud) from floor (farsh) to divine throne (arsh), but the wujud of each existent maahiya is nothing but a grade of the single reality of wujud whose source is God, the absolute being (al-wujud al-mutlaq). What differentiates the wujud of different existents is nothing but wujud in different degrees of strength and weakness. The universe is nothing but different degrees of strengths and weaknesses of wujud, ranging from intense degree of wujud of arch-angelic realities, to the dim wujud of lowly dust from which adam was made.
Read more about this topic: Wahdat Al-Wajood