It is because there have been two sorts of progenies that have commenced from Adam.
1) a progeny only through Adam,
and 2) a progeny through both Adam and Eve.
When he reached Arabia,
the children asked Adam the Eminent One, 'Who is this lady?'
Adam said, 'This is your mother'.
The Two Different Progenies of Adam
There is another story behind the origin of the lower self.
When Adam was descended unto Earth along with Mother Eve.
Eve was descended unto Jeddah
and Adam was descended unto Nuwar Eliya in Sri Lanka.
There's also a mountain known as Adam's Peak there ,
which bears the footprints of Adam.
Adam then travelled [from Sri Lanka] to Arabia.
When he came to Arabia, he met Eve and they began to live together.
Now, this is not so easy nor is it very brief,
and you do not know this nor is it written in any book
that although both were descended unto Earth,
what was the divine wisdom
behind sending Eve to Jeddah and Adam to Sri Lanka?
Why?
They should have been descended in the same place.
It's not as if they had iPhones or Find My Friends,
[for Adam to say], ‘Eve, where are you?'
[And she says, 'I’m in Jeddah',
and he says, 'Alright, hold up. I'm hopping on a plane and coming!'
That is not how it was, right?
Now, you might say this is divine wisdom
but why don’t you utilise your brain
and figure out what that divine wisdom could be,
other than that they were being punished when they were descended [unto Earth], so being separated must have been further punishment.
It's not as if the moment Adam landed in Sri Lanka,
he rushed to find Eve, boarded a ship and reached Arabia.
There must have been a time when he searched for her
or was informed by God.
There must have been a time when he was alone.
Now, why was this the case?
It is because
there have been two sorts of progenies
that have commenced from Adam.
1) a progeny only through Adam,
and 2) a progeny through both Adam and Eve.
God says, 'inallaha ala kullay shayyan qadeer
I hold authority over everything'.
Previously [before Adam the Eminent One], there was a female Adam
who would bear children through the Command Be,
without the touch of man.
This was a very strange phenomenon for human beings.
Now, if a woman can bear children without a man,
why can a man not bear children on his own?
So, in this period of time,
children would be born from the thigh of Adam.
And he had a good amount of children
by the time he reached Arabia.
When he did, the children asked Adam the Eminent One,
'Who is this lady?'
Adam said, 'This is your mother'.
They said, 'Really? Well, alright'.
They then began to live together
and thus began the progeny of Adam and Eve.
Now, this raises a question
and since the clergymen aren't privy to this secret,
so when the critics asked,
'How did the progeny of Adam continue?
Did siblings marry one another?'
And the clergy didn't have a reply to this.
If you say, ‘One man and one woman carried the progeny forward’,
how can that be possible?
Would the siblings marry one another?
No, right?
Now, this could have a couple of answers.
The first could be
that it's possible that there was a progeny of another Adam to whom they were married.
And the real secret is that
the progeny born from the thigh of Adam
was married to the children born through Adam and Eve.
This is how they weren't related.
And when Adam said to the children,
'Respect your mother,
for paradise lies beneath the feet of your mother'.
This was addressed to the progeny that emerged from Adam’s thigh,
because they did not bear any natural love and respect for Eve.
Adam said to them, ‘She is your mother, respect her.
Paradise lies beneath her feet’.
Now, Adam began to reside in Arabia.
He had gone out to deal with some chores one day.
Satan made good on the opportunity and sent his son
and told him to spy on them.
The son entered their house.
When Adam returned,
he saw that the son of his enemy is stood in his house
and Eve isn't saying anything to it.
Adam cut him into pieces and threw him away.
Iblis materialised instantly and summoned his son,
and the scattered remains joined together and he came back to life.
This happened 2-3 times.
Adam would dismember him and throw him away,
Iblis would come and summon him and his scattered pieces would rejoin and he would come back to life.
So, one day, Adam became fed up
and after cutting him into pieces, he consumed him.
Then, Iblis came and summoned his son,
but he replied from within Adam’s body.
Iblis smiled and said, ‘This is what I wanted’.
This is how the lower self entered the human body.
This is how the lower self entered the body of Adam.
Thereafter, this became legislation for all humankind.
Now, whenever a child is born,
the angels insert the celestial spirits into the body,
and Satan is standing nearby,
ready to insert the lower self into every child.
This is how it happens.
Now, the third question is this:
was the lower self not inserted into Adam the Eminent One’s body in the Realm of Angels?
But the Qur’an states
that an evil whisper was instilled in him in paradise.
So how could he have an evil whisper in the Realm of Angels?
Yes, there is no doubt that Adam the Eminent One was not inflicted by a lower self in the Realm of Angels.
The aforementioned incident [about the Devil’s son] on Earth is how the lower self entered the body of Adam.
However, Satan has the power
to instil an evil whisper in the human heart anywhere, even in the Realm of Angels.
Absolutely anywhere.
Whether or not you have a lower self.
As for the Realm of Angels,
if Adam can make a mistake there
then what’s stopping the evil whispers from coming?
This was permitted by God
because all of it was pre-planned by God.
God needed a pretext for sending Adam into the world.
Had there been no excuse,
Adam would have refused to go
because he would have known what happens on Earth.
He would not go.
Then God introduced stricter laws,
such as ‘one cannot enter paradise
if one bears arrogance the size of a mustard seed’.
However, this law was not in place back then,
but it would not have made a difference even if it had been
because that is what God’s policy and planning were for it to happen,
so it did.