In this article, I shall deal with the concept of hudūth (origination) as contextualized by Avicenna, which emerges in the context of relation between God and the world, while relating the coming into existence of the world with temporality. Avicenna discusses that there are two kinds of origination according to his classification of the celestial and sublunary world in ontology. Rational beings, celestial souls and bodies, heavenly motion and time depend on this motion are known as essential coming into existence (hudūth dhātī). These things are eternal from the point of view of temporality. There is no time difference between them and God who is the ultimate cause of them. The sublunary world consists of matter and bodies of generation and corruption. The various movements of these bodies and the time that depends on the movements are of the topic: temporal coming into existence (hudūth zamānī).