Because he was commanded to prostrate, but he did not prostrate, and most of the forgetfulness is caused by Satan, so he is not forced except by a characteristic that does not enable Satan to approach the servant if he is described by it, so prostration was prescribed for him due to his forgetfulness, for it is proven

It is proven It is reported that when a person prostrates, Satan withdraws and weeps and says, “I commanded the son of Adam to prostrate, so he prostrated, and he will have Paradise. I was commanded to prostrate, but I refused, so I am in Hell.”