The answer—and by Allah is success: Indeed, we see the human being entered upon by inadvertence and forgetfulness while he is in this body from which he has not [yet] transferred; so how does he not forget a state in his first structure?

And that is [shown by the fact] that if the human strove to remember the cutting of his umbilical cord, he would not remember.

So it is more appropriate and more likely that he would not remember what was from him in what preceded before that body.

And this is the proof of forgetfulness.