In the field of psychology in Islamic philosophy, there are two theories on the origination of the soul. Ibn Sina posed the theory of the spiritual origination of the soul and Mulla Sadra propounded the theory of the corporeal origination of the soul. However, contrary to Mulla Sadra’s idea, by the immateriality of the soul at the time of origination, Ibn Sina never meant complete immateriality at the level of practical intellect. Accordingly, it appears that Mulla Sadra’s objections to Ibn Sina are not justified and can be responded to. Likewise, by the corporeality of the soul at the time of origination, Mulla Sadra does not mean that the soul is a body or a type of corporeal thing. Rather, he means that, at the moment of origination, the soul is at the level of potential intellect, at the highest level of corporeality, and at the lowest level of immateriality. There are also some other pieces of evidence that bring the ideas of these two philosophers closer to each other. This paper intends to compare their views regarding the origination of the soul.