He is asking about the way in which Iblees whispered to our father Adam

Firstly:

We do not think
that the questioner or any other Muslim should focus too much on the details
of the stories that are told in the Qur’an, concerning which there is no
sound report from the Prophet (blessings and peace of Allah be upon him),
because if there were any great benefit or wisdom in that, Allah, may He be
glorified and exalted, would have mentioned it in His Book, or the Messenger
(blessings and peace of Allah be upon him) would have taught it to his
companions. So the Muslim should not let himself be distracted by that which
is less important from that which is more important, or by minor details
from the fundamentals.

It was narrated
that al-Mugheerah ibn Shu‘bah said: The Prophet (blessings and peace of
Allah be upon him) said: “Verily Allah dislikes for you gossip, asking too
many questions, and wasting wealth.” Narrated by al-Bukhaari (2408) and
Muslim (593).

Ibn Hajar said
in Fath al-Baari (3/342):

Ibn at-Teen
said: It may be that what is meant is asking about issues that are unclear,
or about what one does not need to ask about, therefore he (blessings and
peace of Allah be upon him) said: “Do not ask me about details that I have
not mentioned to you.” And I say: Interpreting it as referring to ambiguous,
unnecessary matters is more appropriate. End quote.

Secondly:

That also
includes indulging in discussion of the details of the way in which Iblees
(may Allah curse him) whispered to our father Adam and our mother Hawwa’
(peace be upon them both). The Holy Quran only mentions the basics of the
incident, without discussing details of the nature of the whispering or the
way in which it happened. The clearest texts that speak of that are the
verses in which Allah, may He be glorified and exalted, says (interpretation
of the meaning):

“Then
Shaytaan (Satan) whispered suggestions to them both in order to uncover that
which was hidden from them of their private parts (before); he said: ‘Your
Lord did not forbid you this tree save you should become angels or become of
the immortals.’

And he (Shaytaan
(Satan)) swore by Allah to them both (saying): ‘Verily, I am one of the
sincere well-wishers for you both’”

[al-A‘raaf
7:20-21]

And

“Then Shaytaan
(Satan) whispered to him, saying : ‘O Adam! Shall I lead you to the Tree of
Eternity and to a kingdom that will never waste away?’”

[Ta-Ha 20:120].

If we examine
the apparent meaning of the verses, it will become clear to us that this
whispering was verbal and in the form of a direct address. Some of the
scholars narrated that from the majority of commentators. Al-Qurtubi aid in
al-Jaami‘ li Ahkaam al-Qur’an (1/312): Ibn Mas‘ood, Ibn ‘Abbaas and
the majority of the scholars said: He tempted them verbally, and the
evidence for that is the verse in which Allah, may He be exalted, says
(interpretation of the meaning):

“And
he (Shaytaan (Satan)) swore by Allah to them both (saying): ‘Verily, I am
one of the sincere well-wishers for you both’”

[al-A‘raaf
7:20-21].

The apparent
meaning of the word translated here as swore is that it was done verbally.
End quote.

But this
apparent meaning does not explain how Iblees was able to address these words
to Adam and Hawwa’, and whether he appeared in his regular form or disguised
himself to them, and whether he entered Paradise in a real sense or a
metaphorical one. All of these are matters of the unseen which we cannot
discuss without any proof or knowledge, unless we go by the reports which
have been narrated from some of the Sahaabah and Taabi‘een, which Ibn Jareer
at-Tabari (1/532) favoured and which originated with Wahb ibn Munabbih and
were based on the knowledge of the People of the Book. These reports say
that when Iblees wanted to tempt them, he entered the body of a snake, and
the snake had four legs, like a camel. It was one of the most beautiful
beasts that Allah had created, and when the snake entered Paradise, Iblees
emerged from its body. End quote.

Or we may note
what was affirmed by Shaykh al-Ameen ash-Shinqeeti in Adwa’ al-Bayaan,
where he said:

The commentators
mention concerning that the story of the snake, and that Iblees entered its
body in order to gain admittance to Paradise, without the angels who were
appointed over it realising that. All of that comes from the Israa’eeliyyaat
(stories from Jewish sources), and in fact there is no problem with that,
because it is possible that Iblees stood outside Paradise, soon after he was
expelled, in such a way that Adam could hear his words whilst he was in
Paradise. And it is possible that Allah admitted him to Paradise in order to
test Adam and his wife, not by way of honouring Iblees. In rational terms
there is no problem with any of that, and the Qur’an says that Iblees spoke
to Adam and swore an oath to him in order to tempt him and his wife thereby.
End quote.

Rather what
concerns us in this regard is that we should believe with faith in which is
no doubt that this story did indeed happen as Allah has told us in His Book,
and that the seed of enmity was sown between Iblees and his troops and Adam
and his progeny: “Surely,
Shaytaan (Satan) is to man a plain enemy”
[al-Isra’ 17:53].

So beware of him
as Allah has warned you, and seek help against him by means of sincere
devotion to Allah:

“(Iblees
(Satan)) said: “By Your Might, then I will surely mislead them all,

‘Except Your
chosen slaves amongst them (faithful, obedient, true believers of Islamic
Monotheism)’”

[Saad 38:82-83].

Beware, O slave
of Allah, lest you be among those who go astray:

“(Allah) said:
“This is the Way which will lead straight to Me.

Certainly, you
shall have no authority over My slaves, except those who follow you of the
Ghaween (Mushrikoon and those who go astray, criminals, polytheists, and
evil-doers, etc.)

And surely, Hell
is the promised place for them all.

It (Hell) has
seven gates, for each of those gates is a (special) class (of sinners)
assigned”

[al-Hijr
15:41-44].

And Allah knows
best.